CN110307099A

CN110307099A - The control device and control method of internal combustion engine

Info

Publication number: CN110307099A
Application number: CN201910216799.0A
Authority: CN
Inventors: 宫田晃明; 户谷将典; 井户侧正直; 佐佐木浩祐
Original assignee: Toyota Motor Corp
Current assignee: Toyota Motor Corp
Priority date: 2018-03-27
Filing date: 2019-03-21
Publication date: 2019-10-08
Anticipated expiration: 2039-03-21
Also published as: CN110307099B; US20190301390A1; US10968854B2; EP3557034A1

Abstract

The control device and control method of a kind of internal combustion engine are provided.Tuned port injection valve sprays fuel to intake channel.Basic the amount of injection is the amount of injection proportional to the new tolerance filled in the cylinder to internal combustion engine.Basic the amount of injection is divided into synchronous the amount of injection and asynchronous the amount of injection by dividing processing.Fuel is synchronously sprayed during the valve opening of the synchronous injection of air inlet and inlet valve.Air inlet is asynchronous to be injected in injection more synchronous than air inlet by the timed injection fuel of side in advance.Selective correcting process corrects asynchronous the amount of injection according to the amendment required amount of basic the amount of injection, does not correct synchronous the amount of injection.

Description

The control device and control method of internal combustion engine

Technical field

This disclosure relates to the control device and control method of internal combustion engine.The internal combustion equipment of application control device and control method The standby tuned port injection valve to intake channel injection fuel.

Background technique

Such as control device documented by Japanese Unexamined Patent Publication 5-256172 bulletin will be based on filling out in the cylinder to internal combustion engine The requirement the amount of injection of the new tolerance filled and determination is divided into the injection in suction stroke i.e. hangover injection and fire stroke later In injection, that is, leading injection.Specifically, control device is by carrying out water temperature to the amount of injection corresponding with the new tolerance of filling Amendment requires the amount of injection to calculate.In addition, control device will require the amount of injection according to the ration of division and after dividing, Corrections Division will be implemented The amount of injection of the amount of injection obtained from reason as final hangover injection.

That is, the fuel injection control system of above-mentioned document is executed so that the fuel quantity required based on inhaled air volume to be divided into The mode that suction stroke injection and instroke spray to spray operates more spray treatments of tuned port injection valve.Suction stroke spray It penetrates and sprays fuel in suction stroke, instroke, which is injected in instroke, sprays fuel.

Summary of the invention

Hereinafter, the example to the disclosure is recorded.

A kind of control device of the internal combustion engine of example 1. has to intake channel using the internal combustion engine of the control device and sprays The tuned port injection valve of fuel is penetrated, the control device is configured to execute:

Basic the amount of injection calculating processing, calculates basic the amount of injection, the basic the amount of injection is and the gas to the internal combustion engine The proportional the amount of injection of the new tolerance filled in cylinder；

The basic the amount of injection is divided into synchronous the amount of injection and asynchronous the amount of injection, the synchronous injection by dividing processing Amount synchronously sprays the amount of injection of the synchronous injection of the air inlet of fuel during being the valve opening with inlet valve, the asynchronous the amount of injection is In injection more synchronous than the air inlet by the amount of injection of the asynchronous injection of air inlet of the timed injection fuel of side in advance；

Required amount output processing is corrected, the amendment required amount of the basic the amount of injection is exported；

Selective correcting process corrects the asynchronous the amount of injection according to the amendment required amount, does not correct described same Walk the amount of injection；And

Operation processing, according to the synchronous the amount of injection and to be carried out the revised asynchronous the amount of injection described to operate Tuned port injection valve.

In said structure, asynchronous the amount of injection is corrected according to amendment required amount, on the other hand, about synchronous the amount of injection Without amendment.The case where asynchronous the amount of injection and synchronous the amount of injection are corrected according to amendment required amount together with hypothesis as a result, It compares, is easy to synchronize the amount of injection and be maintained suitably to be worth for the quantity i.e. PN for reducing particulate material (PM).

In addition, inventor has studied: the quantity i.e. PN in order to reduce the particulate material (PM) in exhaust, replacing will require The fuel of the amount of injection is sprayed all of the asynchronous injection of air inlet, and a part of the amount of injection will be required synchronous using air inlet Injection is to spray.The asynchronous suction stroke that is injected in of air inlet sprays fuel before, and the synchronous injection of air inlet and the valve opening of inlet valve are fixed When synchronously spray fuel.And it is found that when with the amount of injection corresponding with the new tolerance of filling because it is various will be thus When being corrected for the amount of injection variation of the synchronous injection of thus air inlet, it may be difficult to be substantially reduced PN.Above structure reply A possibility that such.

For example 2. in the control device of the internal combustion engine of above-mentioned example 1, the amendment required amount includes for by based on interference The feedforward control of fuel ratio and increase the basic spray compared with small situation in the case where the interference fuel ratio is big The required amount of the reduction amount for the amount of penetrating,

It is described interference fuel ratio be in 1 burn cycle to the combustion chamber of the internal combustion engine flow into fuel quantity in from The ratio of the fuel quantity flowed into the combustion chamber other than the fuel of the tuned port injection valve injection.

In the case where existing from other than the fuel that tuned port injection valve spray to the fuel of combustion chamber inflow, with the stream The fuel entered be cause, the fuel quantity supplied into combustion chamber may for the new tolerance filled into combustion chamber mistake It is surplus.Then, in said structure, export the amendment required amount for basic the amount of injection being reduced according to interference fuel ratio.Therefore, The influence from the fuel flowed into combustion chamber other than the fuel that tuned port injection valve sprays can be compensated by feedforward control. Especially, in said structure, it is corrected due to asynchronous the amount of injection by feedforward control, so being able to suppress synchronous injection Amount is changed because of above-mentioned feedforward control.

In the control device of above-mentioned example 2, the internal combustion engine is also equipped with example 3.:

Tank, traps the fuel vapo(u)r from fuel tank, and the fuel tank stores the combustion sprayed from the tuned port injection valve Material；And

Device is adjusted, influx of the fluid in the tank to the intake channel is adjusted；

The control device, which is configured to execute, to be controlled by the adjustment device from the tank to the intake channel stream The flow control of the flow of the fuel vapo(u)r entered is handled,

It is described amendment required amount include for as it is described interference fuel ratio vapor ratio it is big in the case where with it is small The case where compared to the reduction amount for increasing the basic the amount of injection required amount,

The vapor ratio is the flow of fuel vapo(u)r ratio shared in the fluid in the intake channel.

The fuel vapo(u)r flowed into from tank to intake channel becomes the fuel quantity flowed into combustion chamber relative to basic the amount of injection It is superfluous will be because.As a result, in said structure, by feedforward control, basic the amount of injection is reduced according to vapor ratio.Especially Be, in said structure, since asynchronous the amount of injection is corrected by feedforward control, thus be able to suppress synchronous the amount of injection because Above-mentioned feedforward control and change.

For example 4. in any one control device in above-mentioned 1~example of example 3, the amendment required amount includes for described interior Increase the required amount of the incrementss of the basic the amount of injection in the case that the temperature of combustion engine is low compared with high situation.

Even if from tuned port injection valve spray fuel quantity it is identical, in the case where the temperature of internal combustion engine is low with high situation It compares, the fuel quantity for being actually used in burning in the combustion chamber also tails off.As a result, in said structure, for the feelings low in temperature Using feedforward control by the amount of injection increment under condition, output increases the amendment required amount of the incrementss of basic the amount of injection.Especially, exist In above structure, since asynchronous the amount of injection is corrected by feedforward control, so being able to suppress synchronous the amount of injection because above-mentioned Feedforward control and change.

For example 5. in any one control device in above-mentioned 1~example of example 4, the amendment required amount includes being used for for basis The detected value feedback control of air-fuel ratio sensor is corrected to the required amount of the basic the amount of injection at the operating quantity of target value,

The air-fuel ratio sensor is set to the exhaust channel of the internal combustion engine.

In said structure, it is corrected due to only asynchronous the amount of injection by feedback modifiers amount, so being able to suppress same Step the amount of injection is changed because of feedback control.

For example 6. in any one control device in above-mentioned 1~example of example 5, the amendment required amount includes for filling out described The required amount of the basic the amount of injection is corrected when the transition for the new tolerance variation filled according to the variation of the new tolerance.

In the case where the variation of the new tolerance of filling, changed with the fuel quantity adhered to intake channel for cause, to burning The fuel quantity of indoor inflow generates deviation relative to basic the amount of injection.Then, in said structure, feedforward control is utilized in transition System is to compensate the deviation.Especially, in said structure, it is corrected due to asynchronous the amount of injection by feedforward control, so Synchronous the amount of injection is able to suppress to change because of above-mentioned feedforward control.

Control device described in example 7. is also configured as executing based on the new tolerance filled into the cylinder of the internal combustion engine and set The fixed requirement the amount of injection setting processing for by air-fuel ratio control at the requirement the amount of injection of target air-fuel ratio,

The operation processing requires the amount of injection to be divided into the synchronous the amount of injection and the asynchronous the amount of injection for described, with The mode for successively spraying the fuel of the asynchronous the amount of injection and the fuel of the synchronous the amount of injection operates the tuned port injection Valve,

The operation processing includes the case where handling as follows: in the case where the temperature of the internal combustion engine is low compared with high, By the situation for requiring the amount of injection increment, and keeping the temperature of the internal combustion engine low feelings high relative to the temperature of the internal combustion engine Temperature of the delta ratio of the synchronous the amount of injection of the condition situation lower than the temperature of the internal combustion engine relative to the internal combustion engine The delta ratio of the asynchronous the amount of injection of high situation is small.

Even if from tuned port injection valve spray fuel quantity it is identical, in the case where the temperature of internal combustion engine is low with high situation It compares, the fuel quantity for being actually used in burning in the combustion chamber also tails off.As a result, in said structure, pass through the feelings low in temperature The amount of injection increment will be required under condition, to inhibit the fuel quantity for being actually used in burning insufficient.At this point, in said structure, making to synchronize The delta ratio of the amount of injection is smaller than the delta ratio of asynchronous the amount of injection.Even if as a result, because the temperature of internal combustion engine is low will In the case where seeking the amount of injection increment, it is also able to suppress the variation of synchronous the amount of injection, and then is easy for synchronous the amount of injection to be set to pair Suitably it is worth for the purpose for reducing PN.

For example 8. in the control device of above-mentioned example 7, the operation processing includes following processing: big in interference fuel ratio In the case of compared with small situation, require the amount of injection to be reduced for described, and make the big situation of the interference fuel ratio relative to The decrement ratio of the synchronous the amount of injection of the small situation of the interference fuel ratio situation bigger than the interference fuel ratio The decrement ratio of the asynchronous the amount of injection of the situation small relative to the interference fuel ratio is small,

In the case where existing from other than the fuel that tuned port injection valve spray to the fuel of combustion chamber inflow, with the combustion Material is cause, and the fuel quantity supplied into combustion chamber may be superfluous for the new tolerance filled into combustion chamber.Then, In said structure, the amount of injection will be required to be reduced according to interference fuel ratio.Thereby, it is possible to compensate from tuned port injection valve to spray The influence of the fuel flowed into combustion chamber other than the fuel penetrated.At this point, making the decrement ratio of synchronous the amount of injection than asynchronous spray The decrement ratio for the amount of penetrating is small.Therefore, even if being also able to suppress the change of synchronous the amount of injection in the case where the amount of injection will be required to be reduced Change, and then is easy to be set to suitably to be worth for the purpose for reducing PN by synchronous the amount of injection.

In the control device of above-mentioned example 8, the internal combustion engine has example 9.:

Device is adjusted, influx of the fluid in the tank to the intake channel is adjusted,

The control device, which is configured to execute, to be led to by operating the adjustment device to control from the tank to the air inlet The flow control processing of the flow for the fuel vapo(u)r that road flows into,

The operation processing includes following processing: in the case where the vapor ratio as the interference fuel ratio is big with Small situation is compared, and the situation for requiring the amount of injection to be reduced described, and keeping the vapor ratio big is relative to the vapor ratio The situation that the decrement ratio of the synchronous the amount of injection of small situation is bigger than the vapor ratio is small relative to the vapor ratio The case where the asynchronous the amount of injection decrement ratio it is small,

The vapor ratio is the flow of fuel vapo(u)r ratio shared in the flow of the fluid in the intake channel.

The fuel vapo(u)r flowed into from tank to intake channel becomes the fuel quantity that flows into combustion chamber relative to requiring the amount of injection It is superfluous will be because.As a result, in said structure, the amount of injection will be required to be reduced according to vapor ratio.Especially, in above structure In, keep the decrement ratio of synchronous the amount of injection smaller than the decrement ratio of asynchronous the amount of injection.Therefore, even if that the amount of injection will be required to subtract In the case where amount, it is also able to suppress the variation of synchronous the amount of injection, and then is easy for synchronous the amount of injection to be set to for reducing PN's Suitably it is worth for purpose.

Example 10. is in any one control device in above-mentioned 7~example of example 9, and the operation processing includes following processing: in institute Corrected when stating the transition of the new tolerance variation of filling it is described require the amount of injection, and make the synchronous the amount of injection when transition The absolute value for correcting the amendment ratio of the asynchronous the amount of injection of the absolute value of ratio than the transition when is small.

In any one control device in above-mentioned 1~example of example 10, the control device is configured to execute example 11.:

It is required that the amount of injection calculating is handled, calculated based on the new tolerance filled into the cylinder of the internal combustion engine for will be empty It fires than controlling the requirement the amount of injection at target air-fuel ratio；

More spray treatments are held to spray the fuel for requiring the amount of injection by operating the tuned port injection valve The synchronous injection of the row air inlet and the asynchronous injection of the air inlet；

Decrement treatment, even if the new tolerance of the filling is identical, in the case where predetermined condition is set up, also by the requirement The amount of injection decrement；And

Both sides' correcting process, the asynchronous the amount of injection are sprayed according to the requirement after being reduced by the decrement treatment The amount of penetrating determines, in the case where the asynchronous the amount of injection is less than the minimum injection limit that the tuned port injection valve is allowed, It, will be described to make the asynchronous the amount of injection as the mode more than minimum injection limit by the asynchronous the amount of injection increment Synchronous the amount of injection decrement.

In said structure, asynchronous the amount of injection be less than minimum injection limit in the case where so that asynchronous the amount of injection at It is mode more than minimum injection limit by asynchronous the amount of injection increment, on the other hand, by synchronous the amount of injection decrement.Thereby, it is possible to It avoids asynchronous the amount of injection from becoming smaller than minimum injection limit, and inhibits the sum of asynchronous the amount of injection and synchronous the amount of injection from requiring to spray The amount of penetrating deviates.Therefore, it is able to suppress the decline of the controlling of the amount of injection.

Inventor is it is found that in more spray treatments, the determination with respect to the new tolerance filled into combustion chamber Amount, in the case where implementing various modified situations to fuel injection amount, there are it is following a possibility that.That is, the injection after segmentation At least one in amount may be less than the minimum injection limit of tuned port injection valve, in which case it is possible to the control of meeting the amount of injection Property decline and discharge characteristic deteriorate.A possibility that above structure reply is such.

For example 12. in the control device of above-mentioned example 11, both sides' correcting process makes the asynchronous injection before amendment Amount becomes the increment correction amount of the asynchronous the amount of injection with the residual quantity of the minimum injection limit, and also becomes the synchronous spray The decrement correction amount for the amount of penetrating,

The control device is also configured as executing the choosing of any one of the processing of selection single-injection and described more spray treatments Processing is selected, the single-injection processing is by operating the tuned port injection valve using the asynchronous injection of the air inlet to spray The fuel for requiring the amount of injection is stated,

The selection processing includes described in the synchronous the amount of injection after being reduced by the decrement correction amount is less than The processing of the single-injection processing is selected in the case where minimum injection limit.

Come in the decrement correction amount by using asynchronous the amount of injection with the residual quantity of minimum injection limit as synchronous the amount of injection It corrects synchronous the amount of injection and synchronizes the amount of injection less than in the case where minimum injection limit, more spray treatments can not be executed and made asynchronous The both sides of the amount of injection and synchronous the amount of injection become minimum injection limit or more.Then, in said structure, hold in this case The processing of row single-injection.Therefore, the state of affairs of fuel for making the injection of tuned port injection valve be less than minimum injection limit can sufficiently be inhibited.

For example 13. in the control device of above-mentioned example 11 or example 12, the predetermined condition includes that the new tolerance reduces this Condition,

The decrement treatment be included in the case that the new tolerance is reduced by will the asynchronous the amount of injection be reduced come By the transition correcting process for requiring the amount of injection to be reduced.

In the case where new tolerance is reduced, the fuel quantity for being attached to intake channel is transiently reduced, and the reduction amount is another Add and is flowed into combustion chamber.In this case, in order to by air-fuel ratio control at target air-fuel ratio and based on new tolerance calculate It is required that the amount of injection may be superfluous.Then, in said structure, in the case where new tolerance is reduced, by by asynchronous injection Amount is reduced to inhibit to require the amount of injection superfluous.But, in this case, asynchronous the amount of injection may be less than minimum injection limit. The utility value of both sides' correcting process is especially big as a result,.

In any one control device in above-mentioned 11~example of example 13, the control device is also configured as executing choosing example 14. Select the selection processing of single-injection processing and any one of described more spray treatments, the single-injection processing by operation it is described into Port-injection valve and spray the fuel for requiring the amount of injection using the asynchronous injection of the air inlet,

The predetermined condition includes by the selection processing from the state for having selected the single-injection to handle to selection The state of more spray treatments switches this condition,

The decrement treatment include by the selection processing from the state for having selected the single-injection to handle to choosing In the case where the state switching for selecting more spray treatments, by the way that the asynchronous the amount of injection decrement is sprayed the requirement Measure the transition correcting process of decrement.

In the synchronous injection of air inlet, the fuel adhered to compared with the asynchronous injection of air inlet to intake channel is few, therefore in reality When applying more spray treatments, the fuel quantity adhered to compared with when implementing single-injection processing to intake channel is few.If as a result, from single-injection It handles and switches to more spray treatments, then the fuel quantity for being attached to intake channel is transiently reduced, and the reduction amount is into combustion chamber Flow into, thus based on new tolerance calculate requirement the amount of injection may for by air-fuel ratio control at target air-fuel ratio for mistake It is surplus.Then, in said structure, in the case where switching to more spray treatments, asynchronous the amount of injection is reduced.Inhibit as a result, It is required that the amount of injection is superfluous.But, in this case, asynchronous the amount of injection may be less than minimum injection limit, therefore both sides correct The utility value of processing is especially big.

For example 15. in any one control device in above-mentioned 11~example of example 14, the dividing processing sprays the requirement Amount is divided into the asynchronous the amount of injection and the synchronous the amount of injection,

The decrement treatment is the processing for being defined in the asynchronous the amount of injection and being reduced.

Compared with the case where changing asynchronous the amount of injection, in the case where making synchronous the amount of injection variation, discharge characteristic can It can dramatically change.Then, in said structure, the decrement object of decrement treatment is defined in asynchronous the amount of injection.Therefore, energy Enough discharge characteristic is inhibited to deteriorate because of decrement treatment.

The control device of a kind of internal combustion engine of example 16., wherein the internal combustion engine of the application control device has to air inlet Access sprays the tuned port injection valve of fuel, and the control device is configured to execute:

It is required that the amount of injection setting processing, set based on the new tolerance filled into the cylinder of the internal combustion engine for will be empty It fires than controlling the requirement the amount of injection at target air-fuel ratio；And

Operation processing requires the amount of injection to be divided into synchronous the amount of injection and asynchronous the amount of injection, successively to spray institute for described The mode for stating the fuel of asynchronous the amount of injection and the fuel of the synchronous the amount of injection operates the tuned port injection valve, the synchronization The amount of injection synchronously sprays the amount of injection of the synchronous injection of the air inlet of fuel, the asynchronous injection during being the valve opening with inlet valve Amount is the amount of injection in injection more synchronous than the air inlet by the asynchronous injection of air inlet of the timed injection fuel of side in advance；

The control device of a kind of internal combustion engine of example 17., wherein the internal combustion engine of the application control device has to air inlet Access sprays the tuned port injection valve of fuel, and the control device is configured to execute:

Operation processing requires the amount of injection to be divided into synchronous the amount of injection and asynchronous the amount of injection, successively to spray institute for described The mode for stating the fuel of asynchronous the amount of injection and the fuel of the synchronous the amount of injection operates the tuned port injection valve, the synchronization The amount of injection synchronously sprays the amount of injection of the synchronous injection of the air inlet of fuel, the asynchronous injection during being the valve opening with inlet valve Amount is the amount of injection in injection more synchronous than the air inlet by the asynchronous injection of air inlet of the timed injection fuel of side in advance,

The operation processing includes the case where handling as follows: in the case where interfering fuel ratio big compared with small, by institute The situation stated and the amount of injection is required to be reduced, and the keep the interference fuel ratio big situation small relative to the interference fuel ratio The decrement ratio of the synchronous the amount of injection situation bigger than the interference fuel ratio is small relative to the interference fuel ratio The decrement ratio of the asynchronous the amount of injection of situation is small,

The interference fuel ratio be in 1 burn cycle from other than the fuel that the tuned port injection valve sprays to institute State the ratio of the fuel quantity of the combustion chamber inflow of internal combustion engine.

Become from the interference fuel flowed into combustion chamber other than the fuel that tuned port injection valve sprays to combustion chamber and flows into Fuel quantity relative to require the amount of injection it is superfluous will be because.As a result, in said structure, it will be required according to interference fuel ratio The amount of injection decrement.Especially, in said structure, make the decrement ratio of synchronous the amount of injection than the decrement ratio of asynchronous the amount of injection It is small.Therefore, even if in the case where the amount of injection will be required to be reduced, it is also able to suppress the variation of synchronous the amount of injection, and then being easy will Synchronous the amount of injection control is suitably worth for the purpose for reducing PN in pairs.

The control device of a kind of internal combustion engine of example 18., wherein the internal combustion engine of the application control device has to air inlet Access sprays the tuned port injection valve of fuel, and the control device is configured to execute:

The operation processing includes following processing: in the transition that the new tolerance of the filling changes, correcting the requirement The amount of injection, and make the synchronous the amount of injection when transition amendment ratio absolute value than the transition when it is described non-same The absolute value for walking the amendment ratio of the amount of injection is small.

In the case where the variation of the new tolerance of filling, changed with the fuel quantity adhered to intake channel for cause, to burning The fuel quantity of indoor inflow may be superfluous or insufficient.Then, be all in the structure of above-mentioned example 10 and example 18, in transition with The mode for compensating the deviation, which is corrected, requires the amount of injection.It especially, is all to make synchronous injection in the structure of above-mentioned example 10 and example 18 The absolute value of the amendment ratio of amount is smaller than the absolute value of the amendment ratio of asynchronous the amount of injection.Therefore, even if requiring spray in amendment In the case where the amount of penetrating, it is also able to suppress the variation of synchronous the amount of injection, and then is easy for synchronous the amount of injection to be set to for reducing PN Purpose for be suitably worth.

A kind of control device of the internal combustion engine of example 19., is the control device of the fuel injection about internal combustion engine, wherein application The internal combustion engine of the control device has the tuned port injection valve to intake channel injection fuel, and the control device is constituted To execute:

More spray treatments, by spray it is described require the fuel of the amount of injection in a manner of, pass through the operation tuned port injection valve And the synchronous injection of air inlet and the asynchronous injection of air inlet are executed, it is synchronously sprayed during the valve opening of the synchronous injection of the air inlet and inlet valve Fuel is penetrated, the air inlet is asynchronous to be injected in injection more synchronous than the air inlet by the timed injection fuel of side in advance；

Both sides' correcting process, the amount of injection, that is, asynchronous the amount of injection of the asynchronous injection of air inlet is according to passing through the decrement Processing and described after being reduced requires the amount of injection to determine, be less than the tuned port injection valve in the asynchronous the amount of injection and held Perhaps in the case where minimum injection limit, to make the asynchronous the amount of injection will be described as the mode more than minimum injection limit Asynchronous the amount of injection increment, by the i.e. synchronous the amount of injection decrement of the amount of injection of the synchronous injection of the air inlet.

The control method of a kind of internal combustion engine of example 20., wherein the internal combustion engine has the air inlet to intake channel injection fuel Mouth injection valve, the control method have:

Detailed description of the invention

Fig. 1 is the figure for showing the control device and internal combustion engine of the internal combustion engine of first embodiment of the disclosure.

Fig. 2 is the block diagram for showing a part for the processing that the control device in the internal combustion engine of Fig. 1 executes.

(a) of Fig. 3 is partially the time diagram for showing the single-injection processing in the internal combustion engine of Fig. 1, is partially (b) to show Fig. 1 Internal combustion engine in more spray treatments time diagram.

Fig. 4 is the flow chart for showing the process of the injection valve operation processing in the internal combustion engine of Fig. 1.

Fig. 5 A is the figure for showing the setting method of the arrival tail end in the internal combustion engine of Fig. 1.

Fig. 5 B is the figure for showing the setting method of the arrival tail end in the internal combustion engine of Fig. 1.

Fig. 6 A is the figure for showing the effect in the internal combustion engine of Fig. 1.

Fig. 6 B is the figure for showing the effect in the internal combustion engine of Fig. 1.

Fig. 7 (a) part and be partially (b) time diagram for showing the effect in the internal combustion engine of Fig. 1.

Fig. 8 is the part (a) and is partially (b) time diagram for showing the effect in the internal combustion engine of Fig. 1.

Fig. 9 is the time diagram for showing the effect in the internal combustion engine of Fig. 1.

Figure 10 is the control device for the second embodiment for showing the disclosure and the figure of internal combustion engine.

Figure 11 is the block diagram for showing the processing that the control device in the internal combustion engine of Figure 10 executes.

Figure 12 (a) part and be partially (b) time diagram for showing the jet mode in the internal combustion engine of Figure 10.

Figure 13 is the flow chart for showing the process of the injection valve operation processing in the internal combustion engine of Figure 10.

Figure 14 A is the figure for showing the meaning of setting of the arrival tail end in the internal combustion engine of Figure 10.

Figure 14 B is the figure for showing the meaning of setting of the arrival tail end in the internal combustion engine of Figure 10.

(a) part~(c) of Figure 15 is partially the time diagram for showing the effect in the internal combustion engine of Figure 10.

(a) part~(c) of Figure 16 is partially the time diagram for showing the effect in the internal combustion engine of Figure 10.

Specific embodiment

Hereinafter, referring to Fig.1~Fig. 9 carries out the control device of the internal combustion engine for the first embodiment for embodying the disclosure Explanation.

The intake channel 12 of internal combustion engine 10 shown in Fig. 1 is provided with air throttle 14, is provided in the downstream of air throttle 14 Tuned port injection valve 16.It is drawn into the air of intake channel 12 and the fuel that ejects from tuned port injection valve 16 is with air inlet The valve opening of door 18 and flowed into the combustion chamber 24 gone out by cylinder 20 and 22 zoning of piston.In combustion chamber 24, fuel and air Gaseous mixture is used to burn by the spark discharge of igniter 26, and the burning capacity generated at this time is transformed via piston 22 At the rotating energy of crankshaft 28.For the gaseous mixture after burning with the valve opening of exhaust valve 30 and as exhaust to exhaust channel 32 discharges.Exhaust channel 32 is provided with catalyst 34.

The rotary power of crankshaft 28 is transmitted via timing chain 38 to admission cam shaft 40 and exhaust cam shaft 42.It needs Illustrate, in the present embodiment, the power of timing chain 38 via intake valve timing adjust device 44 and to admission cam Axis 40 transmits.Intake valve timing adjustment device 44 is adjusted by adjusting the rotational phase difference of crankshaft 28 and admission cam shaft 40 The actuator of the valve opening timing of inlet valve 18.

Crankcase 50 is connected to intake channel 12 via blowby gas passage 52.It is provided in blowby gas passage 52 and adjusts its flow path The Pcv valve 54 of sectional area.Pcv valve 54 is to become pre- level pressure higher than the pressure of 12 side of intake channel by the pressure of 50 side of crankcase The more than power mechanical spool of valve opening.

The fuel of fuel tank 60 is stored in by fuel by the bunkering that tuned port injection valve 16 sprays in fuel tank 60 Pump 62 is pumped up and is sprayed towards tuned port injection valve 16.The fuel vapo(u)r generated in fuel tank 60 is trapped by tank 64.Tank 64 with Intake channel 12 is interconnected by air bleed passage 68, and the flow path cross sectional area of the fluid in air bleed passage 68 can be by vent valve 66 are adjusted.

Control device 70 is control object with internal combustion engine 10, in order to control control amount (torque, exhaust gas composition of internal combustion engine 10 Deng) and operate the internal combustion engines such as above-mentioned air throttle 14, tuned port injection valve 16, igniter 26, intake valve timing adjustment device 44 10 operation portion.At this point, control device 70 referring to the output signal Scr of crankshaft angle sensor 80, by being set to catalyst 34 The output signal Sca of air-fuel ratio Af, admission cam angle transducer 84 that the air-fuel ratio sensor 82 of upstream detects.In addition, control Cooling of the device 70 referring to the inhaled air volume Ga detected by air flow meter 86, the internal combustion engine 10 detected by water temperature sensor 88 The temperature (water temperature T HW) of water.

Control device 70 have CPU72, ROM74, can electricity rewrite nonvolatile memory 76 and power circuit 78, pass through CPU72 execution is stored in the program of ROM74 to execute the control of above-mentioned control amount.Power circuit 78 is each into control device 70 Position supplies electric power.

Fig. 2 shows a part for the processing that control device 70 executes.Processing shown in Fig. 2 is stored in by CPU72 execution The program of ROM74 is realized.

It is that output signal Scr and admission cam angle based on crankshaft angle sensor 80 are passed that air inlet phase difference, which calculates processing M10, The output signal Sca of sensor 84 calculates the phase difference of the rotation angle of admission cam shaft 40 relative to the rotation angle of crankshaft 28 That is the processing of air inlet phase difference DIN.Target inlet air phase difference, which calculates processing M12, to be the operating point based on internal combustion engine 10 and variable sets Set the goal the processing of air inlet phase difference DIN*.It should be noted that in the present embodiment, being determined by revolving speed NE and charging efficiency η Adopted operating point.Here, CPU72 calculates revolving speed NE based on the output signal Scr of crankshaft angle sensor 80, it is based on revolving speed NE and suction Enter air amount G a to calculate charging efficiency η.It should be noted that charging efficiency η is to determine the new gas filled into combustion chamber 24 The parameter (KL) of amount.

Air inlet phase difference control processing M14 be in order to by air inlet phase difference DIN control at target inlet air phase difference DIN* and Output operation signal MS4 is to operate the processing that intake valve timing adjusts device 44.

It is to calculate mesh based on charging efficiency η and aftermentioned deflation concentration learning value Lp that target deflation rate, which calculates processing M16, Mark the processing of deflation rate Rp.Here, " deflation rate " is the flow for the fluid that will be flowed into from tank 64 to intake channel 12 divided by sucking It is worth obtained from air amount G a, target deflation rate Rp is the target value of the deflation rate in control.

Vent valve operation processing M18 is based on inhaled air volume Ga, in order to so that deflation rate becomes target deflation rate Rp's Mode operates vent valve 66 and exports the processing of operation signal MS5 to vent valve 66.Here, vent valve operation processing M18 be In the identical situation of target deflation rate Rp, inhaled air volume Ga is smaller, and the opening degree of vent valve 66 is made to become the place of smaller value Reason.The reason for this is that inhaled air volume Ga is smaller, then the pressure in intake channel 12 is got over lower than the pressure in tank 64, therefore is flowed Body is easier to be flowed from tank 64 to intake channel 12.

Air inlet pressure presumption processing M20 is the air throttle calculated in intake channel 12 based on revolving speed NE and inhaled air volume Ga The pressure in 14 downstream, that is, air inlet pressure Pm processing.Air inlet pressure presumption processing M20 be for example set as using inlet manifold model and into Valve model calculates the processing of air inlet pressure Pm.Here, inlet manifold model is based on flowing into air capacity and sucking when valve closing Air amount G a calculates air inlet pressure Pm.It is the inflow air capacity to combustion chamber 24 in 1 burn cycle that air capacity is flowed into when valve closing In removing be blown back into the amount of intake channel 12 before the valve closing period of inlet valve 18 after value.Specifically, air inlet Manifold model flows into obtained from air capacity when subtracting valve closing from the amount being scaled inhaled air volume Ga after the amount of every 1 cylinder In the case that value is big compared with small situation, by make air inlet pressure Pm increase speed become larger in a manner of calculate above-mentioned air inlet pressure Pm. On the other hand, inlet valve model flows into air capacity based on air inlet pressure Pm and revolving speed NE when calculating above-mentioned valve closing.Inlet valve model In the case where air inlet pressure Pm high compared with low situation, calculate air capacity is flowed into when valve closing as big value.

Predicting that deflation rate calculates processing M22 is to calculate pre- measuring based on target deflation rate Rp, air inlet pressure Pm and revolving speed NE The processing of gas rate Rpe.Here, " prediction deflation rate " Rpe is deflation rate relevant to the fluid near tuned port injection valve 16. That is, the deflation rate of the fluid near tuned port injection valve 16 does not also change immediately even if controlling deflation rate using vent valve 66 And generate operating lag.That consider the operating lag is prediction deflation rate Rpe.It should be noted that " response time " It is set based on air inlet pressure Pm, revolving speed NE.

Basic the amount of injection, which calculates processing M30, to be calculated based on charging efficiency η for making the gaseous mixture in combustion chamber 24 Air-fuel ratio becomes basic value, that is, basic the amount of injection Qb processing of the fuel quantity of target air-fuel ratio.Specifically, basic the amount of injection Processing M30 is calculated for example in the case where charging efficiency η is showed by percentage, is set as by charging efficiency η's is every for making The fuel quantity QTH that 1% air-fuel ratio becomes target air-fuel ratio calculates the processing of basic the amount of injection Qb multiplied by charging efficiency η i.e. It can.Basic the amount of injection Qb is based on the new tolerance filled into combustion chamber 24, in order to control air-fuel ratio at target air-fuel ratio The fuel quantity of calculating.By the way, " target air-fuel ratio " is for example set as chemically correct fuel.

Feedback processing M32 is to calculate and export to add to feed back obtained from " 1 " to the amendment ratio δ of basic the amount of injection Qb to repair The processing of positive coefficient KAF.The amendment ratio δ of basic the amount of injection Qb be as by air-fuel ratio Af feedback control at target value The feedback operation amount of the operating quantity of Af*.Specifically, feedback processing M32 will be input with the difference of air-fuel ratio Af and target value Af* Proportional element and circuit element each output valve and keep and export and the difference of air-fuel ratio Af and target value Af* corresponding value The sum of output valve of integral element of aggregate-value is set as amendment ratio δ.

Air-fuel ratio study processing M34 be target deflation rate Rp be the air-fuel ratios condition for study such as zero set up in the case where, with The mode for making feedback correction coefficient KAF become smaller relative to the deviation of " 1 " is updated storage in the air-fuel ratio of nonvolatile memory 76 The processing of learning value LAF.It should be noted that air-fuel ratio study processing M34 includes in the update for passing through air fuel ratio learning value LAF The absolute value for handling and correcting ratio δ becomes in predetermined value situation below, is determined as the convergent place air fuel ratio learning value LAF Reason.

Deflation concentration study processing M36 is based in the case where having made air fuel ratio learning value LAF convergent judgement Above-mentioned amendment ratio δ calculates the processing of deflation concentration learning value Lp.Deflation concentration learning value Lp be will correct from from tank 64 to Basic the amount of injection Qb caused by the inflow of the fuel vapo(u)r of combustion chamber 24 is relative to control at the amount of injection needed for target air-fuel ratio Deviation amendment ratio by deflation rate it is every 1% conversion obtained from be worth.Here, in the present embodiment, target is deflated Rate Rp be controlled so as to that feedback correction coefficient KAF when " 0 " big value deviates from " 1 " than because being considered as all by being flowed into from tank 64 Fuel vapo(u)r to combustion chamber 24 causes.That is, amendment ratio δ is considered as amendment from from tank 64 to the fuel vapo(u)r of intake channel 12 Inflow caused by basic the amount of injection Qb relative to control at the amendment ratio of the deviation of the amount of injection needed for target air-fuel ratio.But It is that amendment ratio δ depends on deflation rate, therefore in the present embodiment, deflation concentration learning value Lp is set as the every of deflation rate 1% value " δ/Rp ".

Specifically, by the every 1% amendment ratio " δ/Rp " of the deflation concentration learning value Lp (n-1) of last time and deflation rate Index rolling average processing costs be considered as this deflation concentration learning value Lp (n).Fig. 2 shows the deflation concentration of last time Every 1% value " δ/Rp " respective weighting coefficient α, β of habit value Lp (n-1) and deflation rate.Here, alpha+beta=1.

It is by being calculated multiplied by prediction deflation rate Rpe deflation concentration learning value Lp that amendment ratio of deflating, which calculates processing M38, It deflates out and corrects the processing of ratio Dp.The amendment ratio Dp that deflates is to subtract by the amount of fuel vapo(u)r to basic the amount of injection Qb The amendment ratio of amount amendment and requirement, has negative value.

Reflection ratio setting processing M40 is with inhaled air volume Ga for input, and calculating has and the gas blowby in intake channel 12 The corresponding value of flow reflection ratio REF processing.In view of in the case where inhaled air volume Ga is few compared with more situations into The flow of gas blowby in gas access 12 becomes larger, in the case where inhaled air volume Ga is few and more by reflection ratio setting processing M40 The case where compare, reflection ratio REF is calculated as big value.

Dilution study processing M42 be made air fuel ratio learning value LAF it is convergent judgement and target deflation rate Rp be When zero, the processing of diluted concentration learning value Ld is calculated based on above-mentioned amendment ratio δ.Diluted concentration learning value Ld be will correct by From blowby gas passage 52 to basic the amount of injection Qb caused by the inflow of the fuel vapo(u)r of combustion chamber 24 relative to control at target air-fuel Than being worth obtained from every 1% conversion of the amendment ratio of the deviation of required the amount of injection by reflection ratio REF.Here, in this implementation In mode, when target deflation rate Rp is " 0 ", by feedback correction coefficient KAF deviate from " 1 " will be because being considered as by from blowby gas passage 52 fuel vapo(u)rs for being flowed into combustion chamber 24 cause.That is, amendment ratio δ is considered as amendment from from blowby gas passage 52 to intake channel Basic the amount of injection Qb caused by the inflow of 12 fuel vapo(u)r is relative to control at the deviation of the amount of injection needed for target air-fuel ratio Amendment ratio.But the flow that ratio δ depends on the gas blowby flowed into from blowby gas passage 52 to intake channel 12 is corrected, therefore In the present embodiment, diluted concentration learning value Ld is set as to every 1% value " δ/REF " of reflection ratio REF.

Specifically, by the every 1% amendment ratio of the diluted concentration learning value Ld (n-1) of last time and reflection ratio REF " δ/ The index rolling average processing costs of REF " is set as this diluted concentration learning value Ld (n).

It is dilute by calculating to diluted concentration learning value Ld multiplied by reflection ratio REF that dilution amendment ratio, which calculates processing M44, Release the processing of amendment ratio Dd.Dilution amendment ratio Dd is to carry out decrement to basic the amount of injection Qb by the amount of fuel vapo(u)r and repair The amendment ratio just required has negative value.

Decrement factor calculating processing M46 will be deflated obtained from amendment ratio Dp, dilution amendment ratio Dd and " 1 " addition The processing that value is exported as decrement factor Kd.

Be multiplied processing M48 be by by feedback correction coefficient KAF, air fuel ratio learning value LAF and decrement factor Kd be multiplied come Calculate the processing of adjusted coefficient K c.

Low temperature correcting process M50 is in the case where water temperature T HW is lower than predetermined temperature (such as 70 DEG C), in order to spray substantially The amount of penetrating Qb increment and by low temperature increment coefficient Kw calculate be the value bigger than " 1 " processing.Specifically, the feelings low in water temperature T HW Under condition compared with high situation, low temperature increment coefficient Kw is calculated as big value.

Transition correcting process M52 is to calculate as inhibition in the transition of charging efficiency η variation because attached to intake channel 12 Fuel quantity variation and cause the fuel quantity flowed into combustion chamber 24 change feedforward correction amount transition correction amount Q Processing.In the case where charging efficiency η is reduced, cause is reduced to the fuel quantity adhered to intake channel 12, to combustion chamber The fuel quantity flowed into 24 is superfluous relative to basic the amount of injection Qb, therefore transition correction amount Q is calculated the value being negative.In addition, In the increased situation of charging efficiency η, is increased with the fuel quantity adhered to intake channel 12 as cause, flowed into combustion chamber 24 Fuel quantity it is insufficient relative to basic the amount of injection Qb, therefore transition correction amount Q is calculated the value being positive.Specifically, transition Correcting process M52 is based on charging efficiency η, water temperature T HW, revolving speed NE and air inlet phase difference DIN and is aftermentioned more spray treatments Or single-injection processing, to calculate the processing of transition correction amount Q.Specifically, in the case where water temperature T HW is low with high feelings Condition is compared, to intake channel 12 adhere to fuel quantitative change it is more, therefore transition correction amount Q in the case where water temperature T HW is low with height The case where compare, absolute value becomes larger.It should be noted that transition correction amount Q becomes zero in stable state.

Injection valve operation processing M54 is repaired based on basic the amount of injection Qb, adjusted coefficient K c, low temperature increment coefficient Kw and transition Positive quantity Δ Q exports the processing of operation signal MS2 to tuned port injection valve 16 to operate tuned port injection valve 16.In detail and Speech is the fuel for supplying 16 eject request of tuned port injection valve in 1 burn cycle to 1 cylinder from tuned port injection valve 16 Amount requires the processing of the amount of injection Qd.Herein, it is desirable that the amount of injection Qd is " KcKwQb+ Δ Q ".

In the present embodiment, as fuel injection processing, processing illustrated by part (a) with Fig. 3 is with Fig. 3's (b) both processing of processing illustrated by part.

(a) of Fig. 3 is partially to execute the injection for starting fuel before 18 valve opening of inlet valve and make before 18 valve opening of inlet valve The single-injection processing for the single injection that the injection of fuel terminates.

(b) of Fig. 3 is partially to execute the synchronous injection of air inlet and the asynchronous more injections for spraying the two fuel injections of air inlet Processing.The synchronous spray sprayed and synchronously start fuel during the valve opening of inlet valve 18 at synchronous injection beginning period Is of air inlet It penetrates.The asynchronous asynchronous injection for being injected in injection more synchronous than air inlet by side in advance of air inlet starts to start fuel under period Ins Injection.Specifically, air inlet is synchronous sprays so that before fuel arrival 18 valve opening of inlet valve that tuned port injection valve 16 ejects Position during become inlet valve 18 valve opening during mode spray fuel.In contrast, air inlet it is asynchronous spray so that Become the valve closing of inlet valve 18 during reaching the position before 18 valve opening of inlet valve from the fuel that tuned port injection valve 16 ejects The mode of period sprays fuel.It should be noted that the processing as shown in part (a) of Fig. 3 is that only execution air inlet is asynchronous The processing of injection, so injection beginning period is denoted as " Ins ".

In the present embodiment, more spray treatments are executed for the purpose of reducing PN.That is, low to a certain degree in water temperature T HW In the case where, if executing single-injection processing in the region big to a certain degree charging efficiency η, PN has increased tendency.Make For its reason, it is believed that cause is, in the case where charging efficiency η is big compared with small situation, it is desirable that the amount of injection Qd becomes Big value, as a result, the fuel quantitative change adhered to intake channel 12 is more.Specifically, thus it is speculated that be because being attached to intake channel In the case that 12 fuel quantity becomes more to a certain degree, by the shearing of the fuel of attachment, a part of the fuel of attachment is in drop It is flowed under state to combustion chamber 24.Then, in the present embodiment, in the region big to a certain degree charging efficiency η, using into The synchronous injection of gas carrys out a part of eject request the amount of injection Qd.Although requiring the amount of injection Qd more as a result, can reduce to air inlet The fuel quantity that access 12 adheres to, and then seek the reduction of PN.

The process that Fig. 4 shows the processing of injection valve operation processing M54.Processing shown in Fig. 4 is by CPU72 for example to make a reservation for Period executes repeatedly is stored in the program of ROM74 to realize.It should be noted that hereinafter, being labelled with the number of " S " using beginning Come the step of showing each processing number.

In a series of processing shown in Fig. 4, it is first determined whether there is the requirement for executing more spray treatments in CPU72 (S10).Here, CPU72 charging efficiency η be predetermined value more than this condition (i), charging efficiency η be less than it is bigger than predetermined value This condition (ii) of specified value and water temperature T HW are that the logical AND of above-mentioned predetermined temperature or less this condition (iii) is genuine situation Under, it is determined to have the requirement for executing more spray treatments.Here, in condition (ii), in the case where revolving speed NE high with it is low Situation is compared, it is specified that value becomes big value.In addition, condition (ii) be can by the stop timing of the asynchronous injection of air inlet with it is synchronous The time interval of injection beginning period Is is ensured to be according to the construction of tuned port injection valve 16 and the more than predetermined time of determination Condition.Also, CPU72 is set as executing list in the case where being judged to being not present the requirement for executing more spray treatments (S10: no) Spray treatment requires the amount of injection Qd (S12) to calculate.Then, CPU72 calculates asynchronous injection shown in part (a) of Fig. 3 and opens Period beginning Ins (S14).Then, CPU72 is with the fuel of eject request the amount of injection Qd at asynchronous injection beginning period Ins Mode operates tuned port injection valve 16 (S16) by exporting operation signal MS2 to tuned port injection valve 16.

On the other hand, CPU72 (S10: yes) in the case where being determined to have the execution requirement of more spray treatments is calculated same It is i.e. synchronous injection proportion Ks (S18) to walk the amount of injection Qs ratio shared in basic the amount of injection Qb.Here, CPU72 is according to revolving speed NE, charging efficiency η, water temperature T HW and air inlet phase difference DIN calculate synchronous injection proportion Ks.Specifically, with revolving speed NE, Charging efficiency η, water temperature T HW and air inlet phase difference DIN are input variable and to synchronize injection proportion Ks as the mapping of output variable Data are pre-stored in the state of ROM74, carry out mapping operations to synchronous injection proportion Ks by CPU72.

It should be noted that " mapping data " is the discrete value of input variable and corresponding with the value of input variable The data group of the value of output variable.In addition, " mapping operations " are for example set as becoming in the input of the value and mapping data of input variable Using the value of the output variable of corresponding mapping data as operation result under any one of value of amount unanimous circumstances, different Using the value as obtained from the interpolation of the value for the multiple output variables for including in mapping data as operation result in the case where cause Processing.

Then, CPU72 calculates asynchronous the amount of injection Qns relative to after requiring the amount of injection Qd to remove transition correction amount Q The amount of injection ratio as asynchronous injection proportion Kns (S20).Specifically, CPU72 is by subtracting " Ks/ (Kc from " 1 " Kw) " asynchronous injection proportion Kns is calculated.Then, CPU72 will obtain basic the amount of injection Qb multiplied by synchronous injection proportion Ks The value arrived substitutes into synchronous the amount of injection Qs (S22).Then, CPU72 will be to after requiring the amount of injection Qd to remove transition correction amount Q Value is " KcKwQb " asynchronous multiplied by the sum of value and transition correction amount Q substitution obtained from asynchronous injection proportion Kns The amount of injection Qns (S24).

Asynchronous the amount of injection Qns becomes the following value as a result,.

KnsKcKwQb+ Δ Q=KcKwQb-KsQb+ Δ Q

The sum of asynchronous the amount of injection Qns and synchronous the amount of injection Qs become " KcKwQb+ Δ Q " as a result, this with require to spray The amount of penetrating Qd is equal.

Then, CPU72 is calculated synchronous injection based on revolving speed NE, charging efficiency η, water temperature T HW and air inlet phase difference DIN and opened Period beginning Is (S26).Specifically, CPU72 is primarily based on revolving speed NE, charging efficiency η, water temperature T HW and air inlet phase difference DIN, Calculate the terminal during the position in during the valve closing for reaching inlet valve 18 from fuel that tuned port injection valve 16 ejects Target value reaches tail end.Here, " terminal of period " is from the fuel that tuned port injection valve 16 ejects most The timing of position in during the valve closing for the fuel arrival inlet valve 18 that slow timed injection goes out.Then, CPU72 is based on reaching knot Beam period, synchronous the amount of injection Qs and revolving speed NE calculate synchronous injection beginning period Is.Here, CPU72 is big in synchronous the amount of injection Qs In the case where compared with small situation, synchronous injection beginning period Is is calculated as the value more by shifting to an earlier date side.In addition, CPU72 exists In the case that revolving speed NE is big compared with small situation, synchronous injection beginning period Is is set as to the value more by side in advance.Then, CPU72 is based on synchronous injection beginning period Is and calculates asynchronous injection beginning period Ins (S28).Here, making air inlet asynchronous The injection tail end of injection becomes more than the above-mentioned predetermined time with the time interval of synchronous injection beginning period Is.

By above-mentioned processing, synchronous injection beginning period Is is independently set with asynchronous injection beginning period Ins phase.Its Reason for this is that the above-mentioned arrival tail end of the synchronous injection of air inlet is particularly susceptible to the influence of PN, HC in exhaust.

Fig. 5 A shows PN when the above-mentioned arrival tail end variation for making the asynchronous injection of air inlet, the synchronous injection of air inlet, figure 5B shows HC yield when the above-mentioned arrival tail end variation for making the asynchronous injection of air inlet, the synchronous injection of air inlet.In here, Empty described point is to fix the arrival tail end of the asynchronous injection of air inlet and become the arrival tail end of the synchronous injection of air inlet Described point when change.The described point of blacking is to fix the arrival tail end of the synchronous injection of air inlet and make arriving for the asynchronous injection of air inlet Up to described point when tail end variation.In addition, the respective asynchronous the amount of injection Qns of zero label, diamond shape, rectangular, triangle described point " 8:2 " " 7:3 " " 6:4 " " 5:5 " is corresponded respectively to the ratio of synchronous the amount of injection Qs.

As shown in the hollow described point of Fig. 5 A and Fig. 5 B, the variation for reaching tail end sprayed by air inlet synchronization, PN, The yield of HC significantlys change.As a result, in the present embodiment, the arrival tail end of the synchronous injection of air inlet is set as can Reduce the suitable value of the yield of PN, HC.

Fig. 4 is returned to, CPU72 is to spray the fuel of synchronous the amount of injection Qs at synchronous injection beginning period Is and asynchronous The mode that the fuel of asynchronous the amount of injection Qns is sprayed under injection beginning period Ins, is operated by exporting to tuned port injection valve 16 Signal MS2 operates tuned port injection valve 16 (S16).

It should be noted that CPU72 terminates a series of places shown in Fig. 7 in the case where the processing of S16 is completed for the time being Reason.

Here, the functions and effects to present embodiment are illustrated.

CPU72 is by calculating synchronous the amount of injection Qs multiplied by basic the amount of injection Qb to synchronous injection proportion Ks.It synchronizes as a result, The amount of injection Qs will not be changed because of adjusted coefficient K c, low temperature increment coefficient Kw, transition correction amount Q.

Fig. 6 A shows the synchronization the amount of injection Qs and asynchronous the amount of injection Qns of present embodiment.As shown in Figure 6A, in this implementation In mode, relative to basic the amount of injection Qb correction amount " Qb (KcKw-1)+Δ Q " no matter its value how all be contained in Asynchronous the amount of injection Qns.What value is the value for synchronizing the amount of injection Qs as a result, will not take according to correction amount " Qb (KcKw-1)+Δ Q " And it changes.It is easy that synchronous the amount of injection Qs is made to become the value for realizing the reduction of PN as a result,.

Fig. 6 B is shown as the comparative example of present embodiment and becomes above-mentioned synchronous injection proportion Ks and require the amount of injection Qd The ration of division the case where.In this case, synchronous the amount of injection Qs is by the synchronous spray in correction amount " Qb (KcKw-1)+Δ Q " The amount for penetrating ratio Ks is corrected.

According to the present embodiment, the situation of water temperature T HW high shown in part (a) relative to Fig. 7, in part (b) of Fig. 7 Shown in water temperature T HW it is low in the case where, CPU72 made according to low temperature increment coefficient Kw air inlet it is asynchronous injection Q1 the amount of injection i.e. Asynchronous the amount of injection Qns increment.In addition, the feelings that the absolute value for the amendment ratio Dp that deflates shown in part (a) relative to Fig. 8 is small Condition, in the case that the absolute value of deflation amendment ratio Dp shown in the part (b) of Fig. 8 is big, CPU72 corrects ratio according to deflating Dp and the amount of injection i.e. asynchronous the amount of injection Qns decrement for making the asynchronous injection Q1 of air inlet.Moreover, being filled when relative to stable state When the transition that efficiency eta significantlys change, CPU72 makes the i.e. asynchronous the amount of injection Qns of the amount of injection of the asynchronous injection Q1 of air inlet according to mistake It crosses correction amount Q and changes.Especially, in the case where water temperature T HW is low compared with high situation, asynchronous the amount of injection Qns's The absolute value of variable quantity becomes larger.

The corresponding relationship of item and item documented by above-mentioned " summary of the invention " column in above embodiment is as follows.With Under, for example documented by " summary of the invention " column it is each number and corresponding relationship is shown.

[1] " dividing processing " corresponds to the processing of S18." amendment required amount corresponds to feedback correction coefficient KAF, deflates and repair Positive rate Dp, dilution amendment ratio Dd, air fuel ratio learning value LAF, transition correction amount Q.

" amendment required amount output processing " calculates processing M38 corresponding to amendment ratio of deflating, dilutes at amendment ratio calculating Manage M44, decrement factor calculates processing M46, feedback processing M32, air-fuel ratio study processing M34, the processing M48 that is multiplied, low temperature amendment Handle M50 and transition correcting process M52.

" selective correcting process " corresponds to the processing of S20, S24." operation processing " corresponds to be come from the processing of S28 transfer S16 processing.

[2] example 2 corresponds to deflate amendment ratio calculating processing M38, dilution amendment ratio and calculates and handle M44 and decrement factor Calculate processing M46.

[3] " adjustment device " corresponds to vent valve 66, and " flow control processing " corresponds to target deflation rate and calculate processing M16 And the processing of vent valve operation processing M18.

" vapor ratio " corresponds to the amendment ratio Dp that deflates.It should be noted that deflate amendment ratio Dp and vapor ratio Although not identical, there is one-to-one relationship, amendment corresponding with the amendment ratio Dp that deflates requires to can be considered and from tank Vapor ratio corresponding amendment requirement.

[7] [16] " it is required that the amount of injection setting processing " corresponds to basic the amount of injection calculating processing M30, amendment ratio of deflating is calculated M38 is handled out, dilution amendment ratio calculates processing M44, decrement factor calculates processing M46, feedback processing M32, air-fuel ratio study Handle M34, be multiplied processing M48, low temperature correcting process M50 and transition correcting process M52.That is, " it is required that the amount of injection " is " Kc KwQb+ Δ Q ", this can be considered by calculating basic the amount of injection Qb, adjusted coefficient K c, low temperature increment coefficient Kw and transition amendment It measures Δ Q and sets.

" operation processing " corresponds to the processing of the S16 come from the processing transfer of S28 and the processing of S24, in addition, corresponding to figure 7 processing.

[8], [9] example 8 and example 9 correspond to the processing of Fig. 8.It should be noted that " vapor ratio " corresponds to amendment of deflating Ratio Dp.Although there is one-to-one relationship here, deflation amendment ratio Dp and the vapor ratio from tank be not identical.

[17] " it is required that the amount of injection setting processing " corresponds to basic the amount of injection calculating processing M30, amendment ratio of deflating calculates Handle M38, dilution amendment ratio calculates processing M44, decrement factor calculates processing M46, feedback processing M32, at air-fuel ratio study Manage M34, be multiplied processing M48, low temperature correcting process M50 and transition correcting process M52.That is, " it is required that the amount of injection " is " KcKw Qb+ Δ Q ", this can be considered by calculating basic the amount of injection Qb, adjusted coefficient K c, low temperature increment coefficient Kw and transition correction amount Q And it sets.

" operation processing " corresponds to the processing of the S16 come from the processing transfer of S28 and the processing of S24, in addition, corresponding to figure 8 processing.

[10], [18] " it is required that the amount of injection setting processing " corresponds to basic the amount of injection and calculates processing M30, deflates and correct ratio Calculate processing M38, dilution amendment ratio calculates processing M44, decrement factor calculates processing M46, feedback processing M32, air-fuel ratio Practise processing M34, be multiplied processing M48, low temperature correcting process M50 and transition correcting process M52.That is, " it is required that the amount of injection " is " Kc KwQb+ Δ Q ", this can be considered by calculating basic the amount of injection Qb, adjusted coefficient K c, low temperature increment coefficient Kw and transition amendment It measures Δ Q and sets." operation processing " corresponds to the processing of the S16 come from the processing transfer of S28 and the processing of S24, in addition, corresponding In the processing of Fig. 9.

It should be noted that present embodiment can change as follows and implement.Present embodiment and change below More example technically can be combined with each other and be implemented in reconcilable range.

" about amendment required amount output processing "

In the above-described embodiment, will deflate amendment ratio Dp, dilution amendment ratio Dd, feedback correction coefficient KAF, air-fuel Than the amendment required amount that learning value LAF, low temperature increment coefficient Kw and transition correction amount Q are set as basic the amount of injection Qb, but it is unlimited In this.For example, about this 6 parameters, only can also be set as amendment required amount for 5 therein, in addition, for example can also only by 4 are set as amendment required amount.In addition, only amendment required amount for example can also be set as by 3, in addition, for example can also be only by 2 It is set as amendment required amount, moreover, for example only amendment required amount can also be set as by 1.

" about the asynchronous injection of air inlet "

In the above-described embodiment, so that before fuel arrival 18 valve opening of inlet valve that tuned port injection valve 16 ejects Spraying the injection of fuel as the mode during the valve closing of inlet valve 18 during position is the asynchronous injection of air inlet, but is not limited to This.Such as in the case where asynchronous the amount of injection Qns is excessive, the fuel ejected from tuned port injection valve 16 reaches inlet valve 18 A part during position before valve opening can also be overlapped with during the valve opening of inlet valve 18.

" about the synchronous injection of air inlet "

In the above-described embodiment, it is set to based on revolving speed NE, charging efficiency η, water temperature T HW and air inlet phase difference DIN Up to tail end, but not limited to this.For example, it is also possible to be based on revolving speed NE, charging efficiency η, water temperature T HW and air inlet phase difference DIN To set synchronous injection beginning period Is.In addition, can also replace charging efficiency η as the parameter for indicating load and for example make With basic the amount of injection Qb.In addition, about this 4 parameters of revolving speed NE, load, water temperature T HW and air inlet phase difference DIN, it can also be only Tail end, synchronous injection beginning period Is are reached come variable setting based on 3 parameters therein, or is based only upon 2 parameters It can be changed setting, or be based only upon 1 parameter can be changed setting.

" about single-injection processing "

In the above-described embodiment, it is set as before 18 valve opening of inlet valve single-injection processing to terminate the injection of all fuel Processing, but not limited to this.For example, in the case where requiring the amount of injection Qd big, the stop timing of injection sometimes can also than into The valve opening timing of valve 18 is by postponing side.It should be noted that not necessarily executing single-injection processing.

" about the dividing method for requiring the amount of injection "

In the above-described embodiment, variable based on revolving speed NE, charging efficiency η, water temperature T HW and air inlet phase difference DIN to set Surely the synchronization injection proportion Ks of ratio shared by the synchronization the amount of injection Qs in basic the amount of injection Qb is indicated, but not limited to this.For example, As the parameter i.e. load parameter of new tolerance for indicating to fill into combustion chamber 24, charging efficiency η can also be replaced and use is wanted Seek the amount of injection Qd.In addition, about this 4 parameters of load parameter, revolving speed NE, water temperature T HW and air inlet phase difference DIN, it can also be only Synchronous injection proportion Ks is set come variable based on 3 parameters therein, is based only upon 2 parameters perhaps can be changed setting or only It can be changed setting based on 1 parameter.It should be noted that at this point, it is preferred that using in load parameter and water temperature T HW as far as possible at least 1 sets synchronous injection proportion Ks can be changed.In addition, other than above-mentioned 4 parameters, such as air inlet pressure also can be used, inhale Enter the flow velocity of air.But, according to above-mentioned 4 parameters, air inlet pressure, the flow velocity for sucking air be will appreciate that.

In addition, asynchronous injection proportion Kns is set as indicating in the amount after requiring the amount of injection removing transition correction amount Q Asynchronous the amount of injection Qns shared by ratio amount itself not necessarily.For example, it is also possible to by asynchronous injection proportion Kns It is set as indicating the amount of ratio shared by the asynchronous the amount of injection Qns in basic the amount of injection Qb.In this case, " Kns+Ks=1 " It sets up.It should be noted that in this case, final asynchronous the amount of injection Qns is set as " QbKns+Qb (KcKw-1) + Δ Q ".

In addition, determining synchronous injection proportion Ks itself not necessarily.For example, in above embodiment and its variation In, synchronous the amount of injection Qs can also be calculated based on the parameter of synchronous injection proportion Ks has been determined.In this case, asynchronous spray The amount of penetrating Qns is set as " QbKcKw+ Δ Q-Qs ".

" about interference fuel ratio, vapor ratio "

Calculate deflation concentration learning value Lp, diluted concentration learning value Ld for example, it is also possible to replace, and in air bleed passage 68 and At least one party in blowby gas passage 52 has flow sensor and HC sensor.And it is possible to the inspection based on this pair of sensors Measured value calculates the flow of fuel vapo(u)r, and fuel vapo(u)r is calculated based on the flow of the fuel vapo(u)r of calculating relative to combustion chamber The ratio of the fuel quantity flowed into 24.Even if in this case, also basic injection can be calculated according to the ratio of fuel vapo(u)r Measure decrement correction factor, the decrement amendment ratio, decrement correction amount of Qb.

" about operation processing "

Fig. 7 instantiates increment of the low situation of water temperature T HW relative to the asynchronous the amount of injection Qns of the situation of water temperature T HW high The case where delta ratio of bigger than the zero and synchronous the amount of injection Qs of ratio is zero, but not limited to this.It is based on for example, it is also possible to be defined in In the incrementss " (Kw-1) KcQb " of low temperature increment coefficient Kw 1% and to synchronous the amount of injection Qs distribution.

Fig. 8 instantiate the fuel vapo(u)r being flowed into from tank 64 in combustion chamber 24 ratio it is big situation it is small relative to the ratio The case where the case where decrement ratio is bigger than zero and the decrement ratio of synchronous the amount of injection Qs is zero of asynchronous the amount of injection Qns, but It is without being limited thereto.For example, it is also possible to be defined in 1% to deflate correct in ratio Dp and distributed to synchronous the amount of injection Qs.

In Fig. 9, the absolute value of the amendment ratio of asynchronous the amount of injection Qns when making transition relative to stable state is than zero Greatly, make the absolute value zero of the amendment ratio of synchronous the amount of injection Qs, but not limited to this.Such as transition correction amount can also be defined in Δ Q 1% and to synchronous the amount of injection Qs distribution.

" being handled about deflation control "

In the above-described embodiment, the variable setting target deflation rate Rp according to charging efficiency η, but as variable setting mesh The parameter for marking deflation rate Rp, is not limited to charging efficiency η.Alternatively, it is also possible to make target deflation rate Rp fixed value.In addition, can also It is controlled to two-value by a manner of making the opening degree of vent valve 66 become fully closed or prodefined opening degree.

" about adjustment device "

As the regulating device for the flow for adjusting the fluid from tank to intake channel, it is not limited to vent valve 66.For example, can also To have the fluid in attraction tank 64 and be constituted regulating device to the pump that intake channel 12 is discharged.Has the structure of pump in internal combustion Machine 10 is particularly effective in the case where having booster.

" the characteristic variable device about inlet valve "

The characteristic variable device of characteristic as change inlet valve 18 is not limited to intake valve timing adjustment device 44.For example, It is also possible to change the device of the lifting capacity of inlet valve 18.In this case, indicate that the parameter of the valve characteristic of inlet valve 18 takes Become lifting capacity etc. for air inlet phase difference DIN.

" about control device "

Control device is not limited to have CPU72 and ROM74 and executes software processing.For example, it is also possible to have to above-mentioned reality At least part for applying the software processing in mode carries out the dedicated hardware circuit (such as ASIC etc.) of hardware handles.That is, control Device processed is any structure in (a) below~(c).(a) has according to program the whole for executing above-mentioned processing The programs save sets (the computer-readable storage medium including non-transitory) such as the ROM of processing unit and storage program.(b) Have according to program a part for executing above-mentioned processing processing unit and program save set and execute remaining processing Dedicated hardware circuit.(c) have the whole dedicated hardware circuits for executing above-mentioned processing.Here, have processing unit and Software processing circuit, the dedicated hardware circuit of program save set are also possible to multiple.That is, above-mentioned processing by have 1 or Multiple software processing circuits and the processing circuit of at least one party in one or more dedicated hardware circuits execute.

" other "

Internal combustion engine 10 not necessarily has the characteristic variable device of the characteristic of change inlet valve 18.Internal combustion engine 10 is not necessarily Has air throttle 14.

Hereinafter, fuel injection control of the 0~Figure 16 to the internal combustion engine for the second embodiment for embodying the disclosure referring to Fig.1 Device processed is illustrated.

The intake channel 12 of internal combustion engine 10 shown in Fig. 10 is provided with air throttle 14, is provided in the downstream of air throttle 14 Tuned port injection valve 16.It is drawn into the air of intake channel 12 and the fuel that ejects from tuned port injection valve 16 is with air inlet The valve opening of door 18 and flowed into the combustion chamber 24 gone out by cylinder 20 and 22 zoning of piston.In combustion chamber 24, fuel and air Gaseous mixture is used to burn by the spark discharge of igniter 26, and the burning capacity generated at this time is transformed via piston 22 At the rotating energy of crankshaft 28.For the gaseous mixture after burning with the valve opening of exhaust valve 30 and as exhaust to exhaust channel 32 discharges.Exhaust channel 32 is provided with catalyst 34.

Control device 70 is control object with internal combustion engine 10, in order to control control amount (torque, exhaust gas composition of internal combustion engine 10 Ratio etc.) and operate above-mentioned air throttle 14, tuned port injection valve 16, igniter 26, in intake valve timing adjustment device 44 etc. The operation portion of combustion engine 10.At this point, control device 70 referring to the output signal Scr of crankshaft angle sensor 80, by air flow meter 86 The output of the inhaled air volume Ga of detection, the air-fuel ratio Af detected by air-fuel ratio sensor 82, admission cam angle transducer 84 are believed The temperature (water temperature T HW) of the cooling water of number Sca and the internal combustion engine 10 detected by water temperature sensor 88.It should be noted that scheming Described in 10 the operation signal MS1 for operating air throttle 14, the operation signal MS2 for operating tuned port injection valve 16, Operation signal MS4 for operating the operation signal MS3 of igniter 26 and for operating intake valve timing adjustment device 44.

Control device 70 has CPU72, ROM74 and power circuit 78, and the program for being stored in ROM74 is executed by CPU72 To execute the control of above-mentioned control amount.Each position of the power circuit 78 into control device 70 supplies electric power.

Figure 11 shows a part of the processing of the execution of control device 70.Processing shown in Figure 11 executes storage by CPU72 In ROM74 program and realize.

It is that output signal Scr and admission cam angle based on crankshaft angle sensor 80 are passed that air inlet phase difference, which calculates processing M10, The output signal Sca of sensor 84 calculates the phase difference of the rotation angle of admission cam shaft 40 relative to the rotation angle of crankshaft 28 That is the processing of air inlet phase difference DIN.Target inlet air phase difference, which calculates processing M12, to be the operating point based on internal combustion engine 10 and variable sets Set the goal the processing of air inlet phase difference DIN*.It should be noted that in the present embodiment, being determined by revolving speed NE and charging efficiency η Adopted operating point.Here, CPU72 calculates revolving speed NE based on the output signal Scr of crankshaft angle sensor 80, it is based on revolving speed NE and sucking Air amount G a calculates charging efficiency η.It should be noted that charging efficiency η is to determine the new tolerance filled into combustion chamber 24 Parameter.

It is the processing that basic the amount of injection Qb is calculated based on charging efficiency η that basic the amount of injection, which calculates processing M30,.Basic injection Amount Qb is the basic value of the fuel quantity for making the air-fuel ratio of the gaseous mixture in combustion chamber 24 as target air-fuel ratio.In detail and Speech, basic the amount of injection calculating processing M30 for example in the case where charging efficiency η is showed by percentage, are set as by for making The every 1% fuel quantity QTH that air-fuel ratio becomes the charging efficiency η of target air-fuel ratio calculates basic injection multiplied by charging efficiency η Measure the processing of Qb.Basic the amount of injection Qb is to be controlled air-fuel ratio at mesh based on the new tolerance filled into combustion chamber 24 The fuel quantity that the mode of mark air-fuel ratio calculates.By the way, " target air-fuel ratio " is for example set as chemically correct fuel.

Feedback processing M32 is to calculate and export to add to feed back obtained from " 1 " to the amendment ratio δ of basic the amount of injection Qb to repair The processing of positive coefficient KAF.The amendment ratio δ of basic the amount of injection Qb be as by air-fuel ratio Af feedback control at target value The feedback operation amount of the operating quantity of Af*.Specifically, feedback processing M32 will be input with the difference of air-fuel ratio Af and target value Af* Proportional element and circuit element each output valve and keep and export and the difference of air-fuel ratio Af and target value Af* corresponding value The sum of output valve of integral element of aggregate-value is as amendment ratio δ.

Low temperature correcting process M50 is in the case where water temperature T HW is lower than predetermined temperature Tth (such as 70 DEG C), in order to by base This amount of injection Qb increment and by low temperature increment coefficient Kw calculate be the value bigger than " 1 " processing.Specifically, low in water temperature T HW In the case where compared with high situation, low temperature increment coefficient Kw is calculated as big value.It should be noted that being in water temperature T HW In the case where predetermined temperature Tth or more, low temperature increment coefficient Kw is set as " 1 ", makes the basic spray based on low temperature increment coefficient Kw The correction amount of the amount of penetrating Qb becomes zero.

Transition correcting process M52 is to calculate transition correction amount in the transition for the fuel quantity variation for being attached to intake channel 12 The processing of Δ Q.That is, transition correction amount Q be be attached to intake channel 12 fuel quantity variation transition when inhibit generate to The operating quantity of the feedforward control of the excess or deficiency of the fuel quantity flowed into combustion chamber 24.Transition correcting process M52 for example including Transition correction amount Q is calculated to the processing for the value being negative in the case where charging efficiency η is reduced.That is, reduced in charging efficiency η In the case of, the fuel quantity for being attached to intake channel 12 is transiently reduced, which is separately added, and is flowed into combustion chamber 24 Fuel quantity may be superfluous relative to basic the amount of injection Qb.Transition correction amount Q calculating is by transition correcting process M52 as a result, Negative value.In addition, for example, transition correcting process M52 is included in transition correction amount Q calculation in the increased situation of charging efficiency η The processing for the value being positive out.That is, in the increased situation of charging efficiency η, it is transitional with the fuel quantity for being attached to intake channel 12 It is cause that ground, which increases, and the fuel quantity flowed into combustion chamber 24 may be relative to basic the amount of injection Qb by incrementss deficiency. Transition correction amount Q is calculated the value being positive by transition correcting process M52 as a result,.Specifically, transition correcting process M52 is base It in charging efficiency η, water temperature T HW, revolving speed NE and air inlet phase difference DIN and is that aftermentioned more spray treatments or single-injection processing come Calculate the processing of transition correction amount Q.It should be noted that transition correction amount Q becomes zero in stable state.

By the way, Figure 11 schematically shows charging efficiency η in the case where indicating more spray treatments and adhesion amount The curve f1 of the relationship of the curve f2 of relationship and charging efficiency η and adhesion amount in the case where expression single-injection processing.Moreover, figure 11 schematically show the variation of adhesion amount when charging efficiency η from " η 1 " to " η 2 " changes in the case where more spray treatments Amount is " Δ Q ".But, in the present embodiment, the case where charging efficiency is reduced to " η 2 " from " η 1 " such as in 1 burn cycle Under, it is not intended that being defined in next burn cycle and transition correction amount Q being set as the value schematically shown in Figure 11, predetermined Transition correction amount Q is set as the value different from zero in period.

Injection valve operation processing M54 be based on basic the amount of injection Qb, feedback correction coefficient KAF, low temperature increment coefficient Kw and Transition correction amount Q exports the processing of operation signal MS2 to tuned port injection valve 16 to operate tuned port injection valve 16. It specifically, is to supply 16 eject request of tuned port injection valve in 1 burn cycle to 1 cylinder from tuned port injection valve 16 Fuel quantity be to require the processing of the amount of injection Qd.Herein, it is desirable that the amount of injection Qd is " KAFKwQb+ Δ Q ".

In the present embodiment, as fuel injection processing, processing illustrated by part (a) with Figure 12 is with Figure 12's (b) both processing of processing illustrated by part.

(a) of Figure 12 partially be execute it is synchronous with the air inlet of fuel is synchronously sprayed during the valve opening of inlet valve 18 spray and In injection more synchronous than air inlet by the asynchronous more injections for spraying the two fuel injections of air inlet of the timed injection fuel of side in advance Processing.Specifically, air inlet is synchronous sprays so that before fuel arrival 18 valve opening of inlet valve that tuned port injection valve 16 ejects The position (downstream of air inlet.In other words, intake section of the air inlet to combustion chamber 24) during be contained in inlet valve 18 Valve opening during mode spray fuel.Here, the starting point of " during arrival " is the combustion ejected from tuned port injection valve 16 The fuel gone out in earliest timed injection in material reaches the timing of the position before 18 valve opening of inlet valve.The end of " during arrival " Point is that the fuel gone out in timed injection at the latest from the fuel that tuned port injection valve 16 ejects reaches 18 valve opening of inlet valve The timing of preceding position.It sprays in contrast, air inlet is asynchronous so that the fuel ejected from tuned port injection valve 16 is in air inlet The mode that inlet valve 18 is reached before 18 valve opening of door sprays fuel.In other words, the asynchronous injection of air inlet is from tuned port injection valve 16 The fuel ejected until 18 valve opening of inlet valve in intake channel 12 be detained and in the rear to burning of 18 valve opening of inlet valve The injection flowed into room 24.It should be noted that in the present embodiment, the asynchronous injection of air inlet is so that from tuned port injection valve Mode during being contained in the valve closing of inlet valve 18 during position before 16 fuel arrival 18 valve opening of inlet valve ejected is sprayed Penetrate fuel.

(b) of Figure 12 is partially the single-injection processing for only executing the asynchronous injection of air inlet.

In the present embodiment, more spray treatments are for the purpose of the quantity (PN) for reducing the particulate material (PM) in exhaust And it executes.That is, if executing single-injection in water temperature T HW low to a certain degree situation and the big to a certain degree region charging efficiency η Processing, then PN has increased tendency.It is believed that the reason for this is that in the case where charging efficiency η is big compared with small situation, It is required that the amount of injection Qd becomes big value, as a result, the fuel quantitative change adhered to intake channel 12 is more.Specifically, thus it is speculated that be because, In the case where the fuel quantity for being attached to intake channel 12 becomes more to a certain degree, pass through the shearing of the fuel of attachment, the combustion of attachment A part of material flows under drop state to combustion chamber 24.Then, in the present embodiment, charging efficiency η to a certain degree In big region, using the synchronous injection of air inlet come a part of eject request the amount of injection Qd.So, although requiring the amount of injection Qd is more, but reduces the fuel quantity adhered to intake channel 12, and then seek the reduction of PN.

It should be noted that the transition correcting process M52 of Figure 11 is in the switching of more spray treatments and single-injection processing Transition correction amount Q is set to become the value other than zero.That is, when implementing single-injection processing compared with when implementing more spray treatments, attachment It is more in the fuel quantitative change of intake channel 12.It for example handles from single-injection in the case where more spray treatments switching, adheres to as a result, It is transiently reduced in the fuel quantity of intake channel 12, which is separately added and flowed into combustion chamber 24.Therefore, because making Correction amount Q is crossed as the value smaller than zero, so inhibiting the fuel quantity flowed into combustion chamber 24 superfluous.

The process that Figure 13 shows the processing of injection valve operation processing M54.Processing is by CPU72 for example with pre- shown in Figure 13 Fixed cycle executes repeatedly and is stored in the program of ROM74 and realizes.It should be noted that hereinafter, being labelled with the number of " S " using beginning Word is come number the step of showing each processing.

In a series of processing shown in Figure 13, it is first determined whether there is the requirement for executing more spray treatments in CPU72 (S110).Here, CPU72 is judged to depositing in the case where the logical AND of condition below (vi), (vii) and (viii) is genuine situation In the requirement for executing more spray treatments.

Condition (vi): charging efficiency η is this condition of predetermined value or more.If the condition is if having carried out single-injection processing Then can excessively it become larger to the fuel quantity that intake channel 12 adheres to, PN may become significant condition.

Condition (vii): revolving speed NE is this condition of predetermined speed NEth or less.The condition is can be by the asynchronous spray of air inlet The time interval of the beginning timing of the stop timing penetrated injection synchronous with air inlet is ensured to be the construction according to tuned port injection valve 16 And the condition more than predetermined time determined.In addition, the condition is that operation is negative compared with single-injection processing due to more spray treatments Lotus is big, so inhibiting the condition for causing calorific value excessive because of the increase of the computational load of control device 70.

Condition (viii): water temperature T HW is above-mentioned this condition of predetermined temperature Tth or less.The condition is to intake channel 12 The fuel quantity of attachment becomes larger, and PN may become significant condition.

Also, CPU72 is set as holding in the case where being judged to being not present the requirement for executing more spray treatments (S110: no) Row single-injection handles and calculates and require the amount of injection Qd (S112).

Then, the injection that CPU72 calculates single-injection processing starts period Isin (S114).Specifically, such as (b) of Figure 12 Shown in part, CPU72 by relative to the valve opening period of inlet valve 18 (by (a) across Figure 12 partially and the part (b) both sides and extend Dotted line indicate) be advanced by predetermined amount delta 1 timing be set as reach tail end AEns.Here, reaching tail end AEns is The valve closing phase of inlet valve 18 is reached from the fuel gone out in timed injection at the latest in the fuel that tuned port injection valve 16 ejects Between in position timing target value.Then, CPU72 will be advanced by relative to tail end AEns is reached according to requiring to spray Amount and the injection period of tuned port injection valve 16 and distance determined from the fuel that tuned port injection valve 16 ejects reaches air inlet The injection that the timing of value obtained from the flight time etc. until position when 18 valve closing of door is added is set as single-injection processing starts Period Isin.Figure 13 is returned to, CPU72 is with the combustion of the eject request the amount of injection Qd at the injection beginning period Isin that single-injection is handled The mode of material operates tuned port injection valve 16 (S116) by exporting operation signal MS2 to tuned port injection valve 16.

On the other hand, CPU72 (S110: yes) in the case where being determined to have the execution requirement of more spray treatments is calculated Ratio synchronous the amount of injection Qs shared in basic the amount of injection Qb is i.e. synchronous injection proportion Ks (S118).Here, CPU72 according to turn Fast NE, charging efficiency η, water temperature T HW and air inlet phase difference DIN calculate synchronous injection proportion Ks.Specifically, with revolving speed NE, charging efficiency η, water temperature T HW and air inlet phase difference DIN are input variable and to synchronize injection proportion Ks reflecting as output variable It penetrates data to be pre-stored in the state of ROM74, mapping operations is carried out to synchronous injection proportion Ks by CPU72.

Then, CPU72 calculates asynchronous the amount of injection Qns relative to after requiring the amount of injection Qd to remove transition correction amount Q Amount ratio as asynchronous injection proportion Kns (S120).Specifically, CPU72 is by subtracting " Ks/ (KAF from " 1 " Kw) " asynchronous injection proportion Kns is calculated.Then, CPU72 will obtain basic the amount of injection Qb multiplied by synchronous injection proportion Ks The value arrived substitutes into synchronous the amount of injection Qs (S122).Then, CPU72 will be to after requiring the amount of injection Qd to remove transition correction amount Q Value to be that " KAFKwQb " is substituted into multiplied by value obtained from asynchronous injection proportion Kns with the sum of transition correction amount Q non-same It walks the amount of injection Qns (S124).

KnsKAFKwQb+ Δ Q=KAFKwQb-KsQb+ Δ Q

The sum of asynchronous the amount of injection Qns and synchronous the amount of injection Qs become " KAFKwQb+ Δ Q " as a result, this with require The amount of injection Qd is equal.That is, passing through the processing of S118~S124, it is desirable that the fuel of the amount of injection Qd is divided into asynchronous the amount of injection Qns and synchronous the amount of injection Qs.By the way, synchronous the amount of injection Qs not will receive feedback correction coefficient KAF, low temperature increment coefficient Kw And the influence of the value of transition correction amount Q, become " KsQb ".It means that basic the amount of injection Qb is divided into synchronous injection After measuring Qs and " (1-Ks) Qb ", the value after " (1-Ks) Qb " is corrected becomes asynchronous the amount of injection Qns.It is sprayed in this way by synchronous The amount of penetrating Qs fixed reason is that the variation of the exhaust gas composition in the case where changing synchronous the amount of injection Qs is than making asynchronous injection Measure being changed significantly for the exhaust gas composition in the case that Qns changes.

Then, CPU72 determine asynchronous the amount of injection Qns whether be tuned port injection valve 16 minimum injection limit structurally Qmin or more (S126).Here, " minimum injection limit " Qmin in the case where making tuned port injection valve 16 spray fuel, is based on spray The precision for the amount of penetrating is in the lower limit value of permissible range and sets.CPU72 is being determined as whether asynchronous the amount of injection Qns is less than minimum In the case where the amount of injection Qmin (S126: no), calculates from minimum injection limit Qmin and subtract value obtained from asynchronous the amount of injection Qns That is residual quantity Δ INS (S128).Then, CPU72 determines to subtract whether be worth obtained from residual quantity Δ INS be most from synchronous the amount of injection Qs Small the amount of injection Qmin or more (S130).Also, CPU72 is being judged to subtracting obtained from residual quantity Δ INS from synchronous the amount of injection Qs Value is less than in the case where minimum injection limit Qmin (S130: no), it is believed that can not make synchronous the amount of injection Qs and asynchronous the amount of injection Qns Both sides become minimum injection limit Qmin or more simultaneously, shift to the processing of S112.

In contrast, CPU72 is being judged to subtracting value obtained from residual quantity Δ INS from synchronous the amount of injection Qs as minimum injection In the case where amount Qmin or more (S130: yes), by the asynchronous the amount of injection Qns calculated by the processing of S124 by residual quantity Δ INS carries out increment amendment, and the synchronization the amount of injection Qs calculated by the processing of S122 is carried out decrement by residual quantity Δ INS and is repaired Positive (S132).

In the case that CPU72 makes judgement certainly the case where the processing of S132 is completed and in the processing of S126, it is based on Revolving speed NE, charging efficiency η, water temperature T HW and air inlet phase difference DIN reach tail end shown in part (a) of Figure 12 to calculate AEs(S134).Then, CPU72 calculates the synchronous injection of air inlet based on tail end, synchronous the amount of injection Qs and revolving speed NE is reached It sprays beginning period Is (S136).Here, CPU72 in the case where synchronous the amount of injection Qs is big compared with small situation, by air inlet The injection beginning period Is of synchronous injection calculates as more by the value of side in advance.In addition, CPU72 in the case where revolving speed NE is big with it is small The case where compare, so that the injection beginning period Is of the synchronous injection of air inlet is become the value more by shifting to an earlier date side.It should be noted that so that The side of position when the fuel ejected from tuned port injection valve 16 will not reach 18 valve closing of inlet valve before 18 valve opening of inlet valve Formula has matched and reaches tail end AEs.Then, it is non-same to calculate based on the injection of the synchronous injection of air inlet to start period Is by CPU72 The injection of step injection starts period Ins (S138).Here, making the injection tail end of the asynchronous injection of air inlet synchronous with air inlet The time interval of the injection beginning period Is of injection becomes more than the above-mentioned predetermined time.

By above-mentioned processing, when the injection beginning period Is of the synchronous injection of air inlet and the injection of the asynchronous injection of air inlet start Phase Ins phase is independently set.The reason for this is that the above-mentioned arrival tail end of the synchronous injection of air inlet is particularly susceptible in exhaust PN, HC are impacted.

Figure 14 A shows PN when the above-mentioned arrival tail end variation for making the asynchronous injection of air inlet, the synchronous injection of air inlet, figure 14B shows HC yield when the above-mentioned arrival tail end variation for making the asynchronous injection of air inlet, the synchronous injection of air inlet.Here, Hollow described point is the arrival tail end that the arrival tail end of the asynchronous injection of air inlet is fixed to and made the synchronous injection of air inlet Described point when variation, the described point of blacking are to fix the arrival tail end of the synchronous injection of air inlet and make the asynchronous injection of air inlet Reach described point when tail end variation.In addition, zero label, diamond shape, the respective asynchronous the amount of injection of rectangular, triangle described point Qns corresponds respectively to " 8:2 " " 7:3 " " 6:4 " " 5:5 " with the ratio of synchronous the amount of injection Qs.

As shown in the hollow described point of Figure 14 A and Figure 14 B, no matter in asynchronous the amount of injection Qns with synchronous the amount of injection Qs's When which ratio is ratio be, by the variation of the arrival tail end of the synchronous injection of air inlet, the yield of PN, HC all can big amplitude variations Change.As a result, in the present embodiment, the arrival tail end by the synchronous injection of air inlet is set as that the generation of PN, HC can be reduced The suitable value of amount.

Figure 13 is returned to, CPU72 is with the combustion of the synchronous the amount of injection Qs of injection at the injection beginning period Is of the synchronous injection of air inlet Expect and sprayed at the injection beginning period Ins of the asynchronous injection of air inlet asynchronous the amount of injection Qns fuel mode, pass through to Tuned port injection valve 16 exports operation signal MS2 to operate tuned port injection valve 16 (S116).

It should be noted that CPU72 terminates a series of places shown in Figure 13 in the case where the processing of S116 is completed for the time being Reason.

Here, the functions and effects to present embodiment are illustrated.

Figure 15 illustrates the influence of the transition correction amount Q in the case that charging efficiency η is reduced.(a) of Figure 15 will partially be filled out It fills the asynchronous the amount of injection Qns before efficiency eta is reduced and synchronous the amount of injection Qs is shown by the length of respective injection period.Figure 15 (b) is partially by the asynchronous the amount of injection Qns calculated when charging efficiency η is reduced by the processing of S122, S124 and same Step the amount of injection Qs is shown by the length of respective injection period.(c) of Figure 15 will partially pass through when charging efficiency η is reduced The processing of S132 and the asynchronous the amount of injection Qns that calculates and synchronous the amount of injection Qs are shown by the length of respective injection period Out.

As shown in part (b) of Figure 15, when charging efficiency η is reduced, pass through the asynchronous the amount of injection of transition correction amount Q Qns becomes very small, and asynchronous the amount of injection Qns becomes smaller than minimum injection limit Qmin.In this case, CPU72 is by asynchronous The amount of injection Qns carries out decrement amendment to synchronous the amount of injection Qs with the residual quantity Δ INS of minimum injection limit Qmin, on the other hand, will be non- Synchronous the amount of injection Qns increment is corrected to minimum injection limit Qmin.Thereby, it is possible to make asynchronous the amount of injection Qns and synchronous the amount of injection Qs becomes minimum injection limit Qmin or more.

Figure 16 is illustrated from single-injection and is handled the case where switching to more spray treatments.(a) of Figure 16 is partially handled single-injection When the amount of injection shown by the length of injection period.(b) of Figure 16 will partially pass through when switching to more spray treatments The processing of S122, S124 and the asynchronous the amount of injection Qns that calculates and synchronous length of the amount of injection Qs by respective injection period And it shows.The asynchronous the amount of injection that (c) of Figure 16 will partially be calculated when switching to more spray treatments by the processing of S132 Qns and synchronous the amount of injection Qs are shown by the length of respective injection period.

As shown in part (b) of Figure 16, handles from single-injection in the case where more spray treatments switching, repaired by transition Positive quantity Δ Q and asynchronous the amount of injection Qns becomes very small, asynchronous the amount of injection Qns becomes smaller than minimum injection limit Qmin.At this In the case of, CPU72 subtracts synchronous the amount of injection Qs with the residual quantity Δ INS of minimum injection limit Qmin by asynchronous the amount of injection Qns On the other hand amount amendment is corrected asynchronous the amount of injection Qns increment to minimum injection limit Qmin.Thereby, it is possible to make asynchronous spray The amount of penetrating Qns and synchronous the amount of injection Qs become minimum injection limit Qmin or more.

It should be noted that from single-injection handle to more spray treatments switch when, as the absolute of transition correction amount Q The situation that value becomes larger, such as have the case where revolving speed NE decline.That is, CPU72 is in the processing of S110 in the case where revolving speed NE is big It is judged to being unsatisfactory for the condition of above-mentioned (vii), executes single-injection processing.Here, CPU72 thinks to meet if revolving speed NE declines The condition of above-mentioned (vii), is switched to more spray treatments.In this case, charging efficiency η becomes bigger sometimes, is implementing list The fuel quantity of intake channel 12 is attached to when spray treatment and in the combustion for implementing to be attached to when more spray treatments in intake channel 12 The difference of doses is big, therefore the absolute value of transition correction amount Q becomes larger sometimes.

[11] [19] " it is required that the amount of injection calculating handle " correspond to basic the amount of injection calculate processing M30, feedback processing M32, Low temperature correcting process M50 and transition correcting process M52.I.e., it is desirable that the amount of injection Qd is " QbKAFKw+ Δ Q ", therefore visual To calculate basic the amount of injection Qb, feedback correction coefficient KAF, low temperature increment coefficient Kw and transition respectively by above-mentioned each processing and repairing Positive quantity Δ Q and calculated and required the amount of injection Qd.

" more spray treatments " corresponds to the processing of the S116 come from the processing transfer of S138.

" decrement treatment " corresponds to the processing of the S124 in the case that transition correction amount Q is negative.

" both sides' correcting process " corresponds to the processing of S132." fuel injection control system " corresponds to control device 70.

[12] " selection processing " corresponds to the processing of S110, S130.

[13] example 13 corresponds to and handles illustrated by Figure 15.

[14] example 14 corresponds to and handles illustrated by Figure 16.

[15] " dividing processing " corresponds to the processing of S118~S124.

" about the amount of injection is required "

The amount of injection Qd can also will be required to be set as in addition to low temperature increment coefficient Kw, transition correction amount Q, feedback correction coefficient It is also measured as learning value LAF to obtained from basic the amount of injection Qb amendment except KAF.By the way, at the calculating of learning value LAF Reason is with feedback correction coefficient KAF for input, so that the amendment ratio of the basic the amount of injection Qb based on feedback correction coefficient KAF becomes The processing of small mode renewal learning value LAF.It should be noted that learning value LAF be preferably stored in can electricity rewrite it is non-volatile Property memory.

In addition, for example can also be in the case where interfering fuel ratio big compared with small situation, by based on interference The feedforward control of fuel ratio and the mode for requiring the amount of injection Qd to become smaller, calculating require the amount of injection Qd.Here, " interference fuel ratio Example " refers to what the fuel sprayed in 1 burn cycle from tuned port injection valve 16 was flowed into the combustion chamber 24 of combustion engine 10 outside to inside Ratio of the fuel quantity relative to the total amount of fuel flowed into combustion chamber 24.In addition, as " interference fuel ", such as in internal combustion engine Have and traps from storage out of, the fuel vapo(u)r of the fuel tank for the fuel that tuned port injection valve 16 sprays tank and adjustment tank Adjustment device from fluid to the influx of intake channel 12 in the case where, have the fuel vapo(u)r flowed into from tank to intake channel 12. In addition, for example in the case where internal combustion engine has the system for making the fuel vapo(u)r in crankcase return to intake channel 12, from crankshaft Case is contained in interference fuel to the fuel vapo(u)r that intake channel 12 flows into.

" about decrement treatment "

Injection is required calculating as recorded in above-mentioned " about the amount of injection is required " column according to interference fuel ratio It in the case where amount, can also make that the processing for requiring the amount of injection to be reduced is contained in decrement treatment by interference fuel.

" about the asynchronous injection of air inlet "

In the above-described embodiment, the asynchronous injection of air inlet is set as so that the fuel ejected from tuned port injection valve 16 Mode during being contained in the valve closing of inlet valve 18 during position before reaching 18 valve opening of inlet valve sprays fuel, but is not limited to This.Such as in the case where revolving speed NE high and asynchronous the amount of injection Qns excessive, from the fuel that tuned port injection valve 16 ejects to A part during the position before 18 valve opening of inlet valve can also be overlapped with during the valve opening of inlet valve 18.

" about the synchronous injection of air inlet "

In the above-described embodiment, it is set to based on revolving speed NE, charging efficiency η, water temperature T HW and air inlet phase difference DIN Up to tail end, but not limited to this.For example, it is also possible to be based on revolving speed NE, charging efficiency η, water temperature T HW and air inlet phase difference DIN Start period Is to set the injection of the synchronous injection of air inlet.In addition, the ginseng as the new tolerance for indicating to fill into combustion chamber 24 Number be loads parameter, charging efficiency η can also be replaced and for example using basic the amount of injection Qb.In addition, about revolving speed NE, bearing This 4 parameters of lotus, water temperature T HW and air inlet phase difference DIN can also be based only upon 3 parameters therein can be changed setting and reach knot Beam period, the synchronous injection of air inlet injection start period Is, be based only upon 2 parameters perhaps can be changed setting or be based only upon 1 Parameter can be changed setting.

" about single-injection processing "

In the above-described embodiment, single-injection processing is set as so that the fuel ejected from tuned port injection valve 16 reaches Mode during being contained in the valve closing of inlet valve 18 during position before 18 valve opening of inlet valve sprays fuel, but not limited to this. For example, in the case where requiring the amount of injection Qd big, before fuel arrival 18 valve opening of inlet valve that tuned port injection valve 16 ejects Position during a part sometimes can also be overlapped with during the valve opening of inlet valve 18.It should be noted that not necessarily Execute single-injection processing.

" being handled about selection "

As the execution condition of more spray treatments, it is not limited to the condition of above-mentioned (vi), (vii) and (viii).For example, can also It is this condition (ix) of specified amount or less so that the condition of above-mentioned (vii) is changed to " KwKAFQb ".Here, in revolving speed NE In the case where height compared with low situation, " specified amount " is set as small value.In this case, rise by water temperature T HW In the case where more spray treatments switching, transition correction amount Q may also become big value.That is, the situation low in water temperature T HW Under, low temperature increment coefficient Kw becomes big value, therefore CPU72 is judged to being unsatisfactory for the condition of above-mentioned (ix).On the other hand, work as water Warm THW slightly rises and CPU72 switches to more spray treatments when being judged to meeting the condition of above-mentioned (ix), but in this case, " KwKAFQb " is big.As a result, when implementing single-injection processing and when implementing more spray treatments, it is attached in intake channel 12 Fuel quantity difference it is big, and then the absolute value of transition correction amount Q becomes larger.

" about the dividing method for requiring the amount of injection "

In the above-described embodiment, variable based on revolving speed NE, charging efficiency η, water temperature T HW and air inlet phase difference DIN to set Surely the synchronization injection proportion Ks of ratio shared by the synchronization the amount of injection Qs in basic the amount of injection Qb is indicated, but not limited to this.For example, As the parameter i.e. load parameter of new tolerance for indicating to fill into combustion chamber 24, charging efficiency η can also be replaced and use is wanted Seek the amount of injection Qd.In addition, about this 4 parameters of load parameter, revolving speed NE, water temperature T HW and air inlet phase difference DIN, it can also be only Synchronous injection proportion Ks is set come variable based on 3 parameters therein, is based only upon 2 parameters perhaps can be changed setting or only It can be changed setting based on 1 parameter.It should be noted that at this point, it is preferred that using in load parameter and water temperature T HW as far as possible at least 1 can be changed setting.In addition, other than above-mentioned 4 parameters, such as the flow velocity that air inlet pressure also can be used, suck air.No It crosses, according to above-mentioned 4 parameters, will appreciate that air inlet pressure, the flow velocity for sucking air.

In addition, asynchronous injection proportion Kns is set as indicating in the amount after requiring the amount of injection removing transition correction amount Q Asynchronous the amount of injection Qns shared by ratio amount itself not necessarily.For example, it is also possible to by asynchronous injection proportion Kns It is set as indicating the amount of ratio shared by the asynchronous the amount of injection Qns in basic the amount of injection Qb.In this case, " Kns+Ks=1 " It sets up.It should be noted that in this case, final asynchronous the amount of injection Qns is set as " QbKns+Qb (KAFKw- 1)+Δ Q ".

In addition, determining synchronous injection proportion Ks itself not necessarily.Such as in above embodiment and its variation, Synchronous the amount of injection Qs can also be calculated based on the parameter of synchronous injection proportion Ks has been determined.In this case, asynchronous injection Amount Qns is set as " QbKAFKw+ Δ Q-Qs ".

Such as basic the amount of injection Qb can also be passed through into synchronization by the revised value of feedback correction coefficient KAF " KAFQb " Injection proportion Ks and the amount after dividing is set as synchronous the amount of injection Qs.In this case, synchronous the amount of injection Qs becomes " KsKAF Qb”。

In the above-described embodiment, in the case where charging efficiency η is reduced, using transition correction amount Q only to asynchronous The amount of injection Qns carries out decrement amendment, but not limited to this.For example, it is also possible to be defined in transition correction amount Q 1% and be set as The decrement correction amount of synchronous the amount of injection Qs.

In the above-described embodiment, from single-injection handle to more spray treatments switch when, only using transition correction amount Q Decrement amendment is carried out to asynchronous the amount of injection Qns, but not limited to this.For example, it is also possible to be only limitted to the 1% of transition correction amount Q And it is distributed to synchronous the amount of injection Qs.

" the characteristic variable device about inlet valve "

" about fuel injection control system "

Fuel injection control system is not limited to have CPU72 and ROM74 and executes software processing.For example, it is also possible to have Dedicated hardware circuit (such as the ASIC of hardware handles is carried out at least part of the software processing in above embodiment Deng).That is, fuel injection control system is any structure in (a) below~(c).(a) have according to program and execute (computer including non-transitory can for the programs save set such as whole processing unit of above-mentioned processing and the ROM for storing program The storage medium of reading).(b) have according to program a part for executing above-mentioned processing processing unit and program save set and Execute the dedicated hardware circuit of remaining processing.(c) have the whole dedicated hardware circuits for executing above-mentioned processing.? This, have the software processing circuit of processing unit and program save set, dedicated hardware circuit be also possible to it is multiple.On that is, Processing is stated by having the processing of at least one party in one or more software processing circuits and one or more dedicated hardware circuits Circuit executes.

" other "

For example, existing in the case where having the device for the jet pressure that can change control tuned port injection valve 16 once In the case where being made a negative judgment in the processing of S126, or about next cylinder make affirmative in the processing of S126 Determine and execute the decline control of jet pressure.

Claims

1. a kind of control device of internal combustion engine, wherein the internal combustion engine of the application control device, which has to intake channel, to be sprayed The tuned port injection valve of fuel is penetrated, the control device is configured to execute:

Basic the amount of injection calculating processing, calculates basic the amount of injection, the basic the amount of injection be with into the cylinder of the internal combustion engine The proportional the amount of injection of the new tolerance of filling；

The basic the amount of injection is divided into synchronous the amount of injection and asynchronous the amount of injection by dividing processing, and the synchronous the amount of injection is The amount of injection of injection synchronous with the air inlet of fuel is synchronously sprayed during the valve opening of inlet valve, the asynchronous the amount of injection be than The amount of injection of the synchronous injection of the air inlet by the asynchronous injection of air inlet of the timed injection fuel of side in advance；

Selective correcting process corrects the asynchronous the amount of injection according to the amendment required amount, does not correct the synchronous spray The amount of penetrating；And

Operation processing operates the air inlet according to the synchronous the amount of injection and by the revised asynchronous the amount of injection is carried out Mouth injection valve.

2. the control device of internal combustion engine according to claim 1,

It is described amendment required amount include for by based on interference fuel ratio feedforward control and in the interference fuel ratio Increase the required amount of the reduction amount of the basic the amount of injection in the case where big compared with small situation,

The interference fuel ratio is in the fuel quantity flowed into 1 burn cycle to the combustion chamber of the internal combustion engine from described The ratio of the fuel quantity flowed into the combustion chamber other than the fuel of tuned port injection valve injection.

3. the control device of internal combustion engine according to claim 2,

The internal combustion engine is also equipped with:

Tank, traps the fuel vapo(u)r from fuel tank, and the fuel tank stores the fuel sprayed from the tuned port injection valve；And

The control device, which is configured to execute by operating the adjustment device, to be controlled from the tank to the intake channel stream The flow control of the flow of the fuel vapo(u)r entered is handled,

It is described amendment required amount include for as it is described interference fuel ratio vapor ratio it is big in the case where with small feelings Condition compares the required amount for increasing the reduction amount of the basic the amount of injection,

4. the control device of internal combustion engine described in any one of claim 1 to 3,

The amendment required amount include the case where in the case where the temperature of the internal combustion engine is low compared with high increase described in The required amount of the incrementss of basic the amount of injection.

5. the control device of internal combustion engine according to any one of claims 1 to 4,

The amendment required amount includes for according to for the behaviour by the detected value feedback control of air-fuel ratio sensor at target value The required amount of the basic the amount of injection is measured and corrects,

6. the control device of internal combustion engine according to any one of claims 1 to 5,

The amendment required amount includes for the variation in the transition of the new tolerance variation of the filling according to the new tolerance And correct the required amount of the basic the amount of injection.

7. the control device of internal combustion engine described according to claim 1~any one of 6,

The control device, which is also configured as executing based on the new tolerance filled into the cylinder of the internal combustion engine, to be set for inciting somebody to action Air-fuel ratio controls the requirement the amount of injection setting processing of the requirement the amount of injection at target air-fuel ratio,

The operation processing requires the amount of injection to be divided into the synchronous the amount of injection and the asynchronous the amount of injection for described, with successively The mode for spraying the fuel of the asynchronous the amount of injection and the fuel of the synchronous the amount of injection operates the tuned port injection valve,

The operation processing includes the case where handling as follows: will be described compared with high in the case where the temperature of the internal combustion engine is low It is required that the amount of injection increment, and the institute of the situation for keeping the temperature of the internal combustion engine low situation high relative to the temperature of the internal combustion engine State the delta ratio of synchronous the amount of injection situation relative to the temperature of the internal combustion engine high feelings lower than the temperature of the internal combustion engine The delta ratio of the asynchronous the amount of injection of condition is small.

8. the control device of internal combustion engine according to claim 7,

The operation processing includes the case where handling as follows: in the case where interfering fuel ratio big compared with small, wanting by described in Described in the situation asked the amount of injection to be reduced, and the keep the interference fuel ratio big situation small relative to the interference fuel ratio The decrement ratio of the synchronous the amount of injection situation bigger than the interference fuel ratio situation small relative to the interference fuel ratio The asynchronous the amount of injection decrement ratio it is small,

9. the control device of internal combustion engine according to claim 8,

The internal combustion engine has:

Tank, traps the fuel vapo(u)r from fuel tank, and the fuel tank stores the fuel sprayed from the tuned port injection valve；

The operation processing includes following processing: in the case where the vapor ratio as the interference fuel ratio is big with it is small Situation is compared, and the situation for requiring the amount of injection to be reduced described, and keeping the vapor ratio big is small relative to the vapor ratio The decrement ratio of the synchronous the amount of injection of the situation situation bigger than the vapor ratio feelings small relative to the vapor ratio The decrement ratio of the asynchronous the amount of injection of condition is small,

10. the control device of the internal combustion engine according to any one of claim 7~9,

The operation processing includes following processing: the requirement injection is corrected in the transition that the new tolerance of the filling changes Amount, and make the synchronous the amount of injection when transition amendment ratio absolute value than the transition when the asynchronous spray The absolute value of the amendment ratio for the amount of penetrating is small.

11. the control device of internal combustion engine described according to claim 1~any one of 10,

The control device is configured to execute:

It is required that the amount of injection calculating is handled, based on the new tolerance filled into the cylinder of the internal combustion engine, calculate for by air-fuel ratio Control into the requirement the amount of injection of target air-fuel ratio；

More spray treatments execute institute by operating the tuned port injection valve to spray the fuel for requiring the amount of injection State the synchronous injection of air inlet and the asynchronous injection of the air inlet；

Decrement treatment, in the case where predetermined condition is set up, also sprays the requirement even if the new tolerance of the filling is identical Amount decrement；And

Both sides' correcting process, the asynchronous the amount of injection require the amount of injection according to described after being reduced by the decrement treatment It determines, in the case where the asynchronous the amount of injection is less than the minimum injection limit that the tuned port injection valve is allowed, so that The asynchronous the amount of injection becomes the mode of the minimum injection limit or more by the asynchronous the amount of injection increment, by the synchronization The amount of injection decrement.

12. the control device of internal combustion engine according to claim 11,

Both sides' correcting process makes the residual quantity of the asynchronous the amount of injection and the minimum injection limit before amendment become described The increment correction amount of asynchronous the amount of injection, and also become the decrement correction amount of the synchronous the amount of injection,

The control device is also configured as at the selection for executing any one of the processing of selection single-injection and described more spray treatments Reason, the single-injection processing spray described want by operating the tuned port injection valve using the asynchronous injection of the air inlet The fuel of the amount of injection is sought,

The selection processing includes that the synchronous the amount of injection after being reduced by the decrement correction amount is less than the minimum The processing of the single-injection processing is selected in the case where the amount of injection.

13. the control device of internal combustion engine according to claim 11 or 12,

The predetermined condition includes that the new tolerance reduces this condition,

The decrement treatment is included in the case that the new tolerance is reduced by being reduced the asynchronous the amount of injection by institute State the transition correcting process for requiring the amount of injection to be reduced.

14. the control device of internal combustion engine described in any one of 1~13 according to claim 1,

The predetermined condition includes by the selection processing from the state for having selected the single-injection to handle to described in selection The state of more spray treatments switches this condition,

The decrement treatment include by the selection processing from the state for having selected the single-injection to handle to selection institute In the case where the state switching for stating more spray treatments, by requiring the amount of injection to subtract for described the asynchronous the amount of injection decrement The transition correcting process of amount.

15. the control device of internal combustion engine described in any one of 1~14 according to claim 1,

The dividing processing requires the amount of injection to be divided into the asynchronous the amount of injection and the synchronous the amount of injection for described,